Around two hours after naming his British and Irish Lions squad, Warren Gatland was already casting doubt over the 41 men he has selected to take on the All Blacks, with the sad but true belief being that it will not be the same squad that boards the plane to New Zealand at the end of next month.

That’s because the Lions already have two injury concerns on their hands in Ireland scrum-half Conor Murray and Wales captain Alun Wyn Jones, while there are still two rounds of the Premiership and Pro12 left plus the semi-finals and final, as well as this weekend’s European semi-finals and next month’s Champions Cup and Challenge Cup finals.

That’s a lot of rugby, and the chances are that at least one of the 41 bound for New Zealand will be forced to withdraw. The last five Lions tours have seen an average of more than seven players called up during the tour as replacements, but right now Gatland and his coaching team already has concerns to deal with.

British and Irish Lions squad to tour New Zealand Show all 41 1 /41 British and Irish Lions squad to tour New Zealand British and Irish Lions squad to tour New Zealand <b>Loosehead prop:</b> Joe Marler (England) Age: 26

International caps: 51

Lions caps: 0

Why he’s on the plane: Marler flourished in Mako Vunipola’s absence and kept the Saracens prop out of the England side once he had returned to fitness. The Quins front-row has come of age this season. Getty Images British and Irish Lions squad to tour New Zealand <b>Loosehead prop:</b> Jack McGrath (Ireland) Age: 27

International caps: 41

Lions caps: 0

Why he’s on the plane: McGrath has ousted Cian Healy in the Irish side and proved pivotal to disrupting the English scrum in the Six Nations encounter in Dublin last month. Has also helped Leinster reach the European semi-finals. Getty Images British and Irish Lions squad to tour New Zealand <b>Loosehead prop: </b> Mako Vunipola (England) Age: 26

International caps: 42

Lions caps: 3

Why he’s on the plane: Vunipola looked a certainty on the plane before he suffered a knee injury earlier in the season, but he has returned to full fitness with Saracens and has been one of the standout performers in their return to form since the Six Nations. Getty Images British and Irish Lions squad to tour New Zealand <b>Hooker: </b> Rory Best (Ireland) Age: 34

International caps: 104

Lions caps: 0

Why he’s on the plane: He will head to New Zealand as the oldest member of the Lions squad, though he is yet to play in a Test match while on tour. The Ireland skipper benefitted from Dylan Hartley’s ban in 2013 to tour with the Lions, captaining them in the loss to the Brumbies, but his experience will be valuable to a relatively fresh front-row. Getty Images British and Irish Lions squad to tour New Zealand <b>Hooker: </b> Jamie George (England) Age: 26

International caps: 17

Lions caps: 0

Why he’s on the plane: Probably the form hooker in Europe who can do as good a job from the start of the match as he can do off the replacements’ bench, as he has done so often for England. His only weakness will be that he has never played the All Blacks’ senior side. Getty Images British and Irish Lions squad to tour New Zealand <b>Hooker: </b> Ken Owens (Wales) Age: 30

International caps: 50

Lions caps: 2

Why he’s on the plane: The Scarlets hooker enjoyed a strong Six Nations despite Wales’s struggles, and his physicality at the breakdown will do him well in New Zealand. Getty British and Irish Lions squad to tour New Zealand <b>Tighthead prop: </b> Dan Cole (England) Age: 29

International caps: 74

Lions caps: 3

Why he’s on the plane: The most consistent tighthead in the squad who will offer past experience, current form and the fitness to last 80 minutes if needed. Cole could well force his way into the test side. Getty Images British and Irish Lions squad to tour New Zealand <b>Tighthead prop: </b> Tadhg Furlong (Ireland) Age: 24

International caps: 16

Lions caps: 0

Why he’s on the plane: Enjoyed a brilliant Six Nations tournament along with a purple patch for Leinster, and he is simply a rock in the scrum that even the All Blacks will find difficult to budge. Getty Images British and Irish Lions squad to tour New Zealand <b>Tighthead prop: </b> Kyle Sinckler (England) Age: 24

International caps: 8

Lions caps:0

Why he’s on the plane: He is yet to start a Test for England but that has not stopped his reputation bagging him a spot on the plane to New Zealand. Will add power and pace with the ball, and plenty of character in the changing room that can go a long way to making a difference on a seven-week tour. Getty Images British and Irish Lions squad to tour New Zealand <b>Lock: </b> Iain Henderson (Ireland) Age: 25

International caps: 32

Lions caps: 0

Why he’s on the plane: The forgotten man of Irish rugby provided a timely reminder of why he is rated so highly by helping plot the downfall of England. His versatility will come in handy for the tour where injuries will take their toll, given he can cover lock as well as the back-row. Getty Images British and Irish Lions squad to tour New Zealand <b>Lock: </b> Maro Itoje (England) Age: 22

International caps: 12

Lions caps: 0

Why he’s on the plane: Will head to New Zealand with a target on his back after proving the form player in Europe over the last 18 months. A supremely talented individual with freakish athleticism, who can also make his presence felt at blindside flanker. Getty Images British and Irish Lions squad to tour New Zealand <b>Lock: </b> Alun Wyn Jones (Wales) Age: 31

International caps: 110

Lions caps: 6

Why he’s on the plane: A veteran of two Lions tours already but still only 31 years old, Jones offer everything in terms of leadership, aggression, control and outright ability. Will provide support for captain Sam Warburton, and memorably skippered the 2013 side to victory in the decisive third Test. Getty British and Irish Lions squad to tour New Zealand <b>Lock: </b> George Kruis (England) Age: 27

International caps: 20

Lions caps: 0

Why he’s on the plane: He hasn’t played a game since January but such is his talent in the lineout and his importance to the Saracens and England cause over the last two years that Gatland gave him every chance to prove his fitness. Should get the Lions lineout firing on all cylinders with England coach Steve Borthwick also heading to New Zealand. Getty Images British and Irish Lions squad to tour New Zealand <b>Lock: </b> Courtney Lawes (England) Age: 28

International caps: 58

Lions caps: 0

Why he’s on the plane: Beat England second-row colleague Joe Launchbury to a place in the squad after hitting the form of his life. It’s harsh on the Wasps captain, but Lawes can offer more physicality carrying the ball and a bone-crunching tackle few can equal. Getty Images British and Irish Lions squad to tour New Zealand <b>Flanker:</b> James Haskell Age: 32

International caps: 75

Lions caps: 0

Why he’s on the plane: Because of Billy Vunipola's misfortune. The Saracens No 8 injured his shoulder towards the end of the season that, he decided, needed surgery. Haskell gets the call-up to replace his England teammate, and his inclusion frees up CJ Stander to cover No 8. Getty Images British and Irish Lions squad to tour New Zealand <b>Flanker: </b> Sean O’Brien (Ireland) Age: 30

International caps: 49

Lions caps: 2

Why he’s on the plane: One of those who will not shirk responsibility in going toe-to-toe with the All Blacks, O’Brien is an immensely powerful flanker who can be a nuisance at the breakdown. Could well prove Gatland’s impact replacement in the Tests. Getty Images British and Irish Lions squad to tour New Zealand <b>Flanker: </b> Peter O’Mahony (Ireland) Age: 27

International caps: 40

Lions caps: 0

Why he’s on the plane: For two reasons. The first is guiding Munster through a hugely emotional season that has seen them reach the European Champions Cup last four, the second is for his man of the match display at the Aviva Stadium to shoot down England. Getty Images British and Irish Lions squad to tour New Zealand <b>Flanker: </b> CJ Stander (Ireland) Age: 27

International caps: 15

Lions caps: 0

Why he’s on the plane: The South African-born back-row may have been playing against the Lions had fate taken a different path, but instead he will head to New Zealand as one of the form players in Europe. Likely to be used as No 8 cover, but could bag himself a starting role on the blindside. Getty Images British and Irish Lions squad to tour New Zealand <b>Flanker: </b> Justin Tipuric (Wales) Age: 27

International caps: 51

Lions caps: 1

Why he’s on the plane: The closest thing the Lions have to a natural openside, and offers the pace of an outside centre to help him to the breakdown. Could well be used in tandem with Warburton if Gatland chooses to stick with what he knows best. Getty Images British and Irish Lions squad to tour New Zealand <b>Flanker: </b> Sam Warburton (Wales) Age: 28

International caps: 74

Lions caps: 2

Why he’s on the plane: Emulates Martin Johnson as a two-time Lions captain, and should have enough time to regain his fitness after suffering a six-week knee injury. Flourished at blindside for Wales in the Six Nations but could find himself back in the No 7 shirt. Getty Images British and Irish Lions squad to tour New Zealand <b>No 8: </b> Taulupe Faletau (Wales) Age: 26

International caps: 66

Lions caps: 1

Why he’s on the plane: What he failed to show in the Six Nations, he has delivered at Bath, and a brilliant performance at Twickenham to help see off Leicester Tigers provided a reminder of why he will push Billy Vunipola hard for the starting jersey. Getty Images British and Irish Lions squad to tour New Zealand <b>No 8: </b> Ross Moriarty (Wales) Age: 23

International caps: 17

Lions caps: 0

Why he’s on the plane: Another surprise name but his form in the Six Nations was stunning as he kept Faletau out of the Wales side. He completes an incredibly powerful back row selection. Getty British and Irish Lions squad to tour New Zealand <b>Scrum-half: </b> Conor Murray (Ireland) Age: 27

International caps: 57

Lions caps: 2

Why he’s on the plane: Has struggled with injury of late but when fit he offers so many options from scrum-half. An accurate passer who has a telepathic understanding with Jonathan Sexton, his box-kicks are accurate and he is also a smart runner. Getty Images British and Irish Lions squad to tour New Zealand <b>Scrum-half:</b> Greig Laidlaw (Scotland) Age: 31

International caps: 58

Lions caps: 0

Why he’s on the plane: Ben Youngs' withdrawal from the squad after his sister-in-law and wife of older brother, Tom, learned she was terminally ill left Gatland needing another scrum-half. After returning from the ankle injury he suffered during the Six Nations, Laidlaw was next in line for Gatland, with the Lions coach taking no time at all to call-up the Scotland captain to the squad. Getty British and Irish Lions squad to tour New Zealand <b>Scrum-half: </b> Rhys Webb (Wales) Age: 28

International caps: 28

Lions caps: 0

Why he’s on the plane: The most dangerous No 9 in the squad who has the ability to change a game in a heartbeat. Another who excelled during the Six Nations, and while he needs to keep calm and not give away needless penalties during the tour, he should prove a useful impact off the bench. Getty Images British and Irish Lions squad to tour New Zealand <b>Fly-half: </b> Dan Biggar (Wales) Age: 27

International caps: 56

Lions caps: 0

Why he’s on the plane: Perhaps a surprise inclusion ahead of George Ford and Finn Russell, Biggar gets the nod thanks to the trust Gatland has in his big-game temperament and his reliability with the boot, both from hand and the tee. Getty Images British and Irish Lions squad to tour New Zealand <b>Fly-half: </b> Jonathan Sexton (Ireland) Age: 31

International caps: 66

Lions caps: 3

Why he’s on the plane: One of the Lions’ key players in 2013 and crucial to both the Leinster and Ireland cause, Sexton provided a timely reminder of why he’s so important to this squad during the Six Nations with three wonderful performances. Getty Images British and Irish Lions squad to tour New Zealand <b>Centre: </b> Jonathan Davies (Wales) Age: 29

International caps: 64

Lions caps: 3

Why he’s on the plane: Davies was always likely to make the squad thanks to his contribution in 2013, and while he has not quite matched those levels with his recent form, he is still a powerful unit that can be a handful for the defence to stop. Getty Images British and Irish Lions squad to tour New Zealand <b>Centre: </b> Owen Farrell (England) Age: 25

International caps: 52

Lions caps: 1

Why he’s on the plane: They don’t come more dependable than Farrell, who is adept at playing in both the 10 and 12 shirt at a world class standard. Could line up alongside Sexton in the Test side, but also has the ability to oust him completely. Getty Images British and Irish Lions squad to tour New Zealand <b>Centre: </b> Robbie Henshaw (Ireland) Age: 23

International caps: 29

Lions caps: 0

Why he’s on the plane: Has quickly developed into one of Ireland’s most influential players thanks to his defensive doggedness and smart understanding of the play in front of him. Well in the mix for a starting Test spot. Getty Images British and Irish Lions squad to tour New Zealand <b>Centre: </b> Jonathan Joseph (England) Age: 25

International caps: 33

Lions caps: 0

Why he’s on the plane: He wasn't expected to be named in the squad but Gatland admitted he and his coaches were still arguing about personnel with less than 24 hours to go. He has the X factor that no other centres on the tour have. Getty British and Irish Lions squad to tour New Zealand <b>Centre: </b> Jared Payne (Ireland) Age: 31

International caps: 20

Lions caps: 0

Why he’s on the plane: A real surprise but given Gatland's fondness for Kiwi-born players in this squad. A powerful runner and did well alongside Henshaw. He was also part of the group of Irish players who has a Test victory over New Zealand under their belts. AFP/Getty Images British and Irish Lions squad to tour New Zealand <b>Centre: </b> Ben Te’o (England) Age: 30

International caps: 8

Lions caps: 0

Why he’s on the plane: The New Zealand-born Samoan rugby league international who at 30 years old has just eight international rugby union caps to his name. Hardly the recipe for Lions selection, but Gatland has clearly been impressed by his direct running and impact from the replacements for England. Getty Images British and Irish Lions squad to tour New Zealand <b>Wing: </b> Elliot Daly (England) Age: 24

International caps: 13

Lions caps: 0

Why he’s on the plane: One of the most exciting talents heading out on the tour who offers versatility across the back line, out-and-out gas and a 60m boot that will keep the opposition honest. Daly is also a lovely runner to watch in full flight, and will prove a useful tourist when the inevitable injuries arrive. Getty Images British and Irish Lions squad to tour New Zealand <b>Wing: </b> George North (Wales) Age: 25

International caps: 69

Lions caps: 3

Why he’s on the plane: A Lions player through and through who has already delivered his fair share of memorable moments from the 2013 tour. He rediscovered his form for Wales in the Six Nations, and is a threat from anywhere on the wing that can really scare the All Blacks. Getty Images British and Irish Lions squad to tour New Zealand <b>Wing: </b> Jack Nowell (England) Age: 24

International caps: 23

Lions caps: 0

Why he’s on the plane: Another interesting choice from Gatland, but there is no doubting what Nowell offers the Lions. A tough line-breaker who is equally adept at finishing off tries, as his 11 scores for England demonstrate, and he has taken full advantage of the final few weeks to impress with the Exeter Chiefs. Getty Images British and Irish Lions squad to tour New Zealand <b>Wing: </b> Tommy Seymour (Scotland)

Age: 28

International caps: 36

Lions caps: 0 Why he’s on the plane: Has shown his lethal finishing for Scotland after breaking into the side four years ago and is one who has gone slightly under the radar, doing all the basics to a very high level with Glasgow, to cement his place on the plane. Getty Images British and Irish Lions squad to tour New Zealand <b>Wing: </b> Anthony Watson (England) Age: 23

International caps: 26

Lions caps: 0

Why he’s on the plane: Looked to be one of the more likely Test starters back at the start of the year, but injuries have severely hampered him to the point he will have doubted his place in the squad completely. A return to fitness just in time to participate in the demolition of Scotland before bagging two tries for Bath against Leicester provided Gatland with a timely reminder of his talents. Getty Images British and Irish Lions squad to tour New Zealand <b>Full-back:</b> Leigh Halfpenny (Wales) Age: 28

International caps: 71

Lions caps: 3

Why he’s on the plane: Halfpenny was brilliant in the 2013 series and put 49 points past the Wallabies in just three Tests. His form has dipped over the past year, but Gatland clearly trusts the Toulon star and he also brings a reliability with the boot from 60m. Getty Images British and Irish Lions squad to tour New Zealand <b>Full-back: </b> Stuart Hogg (Scotland) Age: 24

International caps: 53

Lions caps: 0

Why he’s on the plane: One of the most dazzling runners on world rugby who can produce miracles is given a yard of space. He will be tested in the air, but can inflict fear among the New Zealand defence. Toured in 2013 but was left out of the Tests. Getty Images British and Irish Lions squad to tour New Zealand <b>Full-back: </b> Liam Williams (Wales) Age: 26

International caps: 43

Lions caps: 0

Why he’s on the plane: Williams is rapid when given the chance to break and has forced his way into the Wales side, albeit on the wing. Likely to be used more as a full-back in New Zealand, but his reliability under the high ball and desire to come in-field to get involved will interest Gatland. Getty Images

Murray has not played since he was forced off in Ireland’s defeat by Wales in the Six Nations on 10 February. A planned comeback for Munster on Saturday, in their Champions Cup semi-final against Saracens, has been shelved after he suffered a setback in his recovery from nerve damage, and Gatland’s message was clear on Wednesday: fail to play before the Lions depart and you’ll be replaced.

“It is a concern,” Gatland said. “He’s going to need to play before he gets on the plane. That’s going to be important for us. I would be reluctant to take someone to New Zealand with a neck injury who hasn’t played particularly. His last game was against Wales, on March 10th I think.

“He’s incredibly fit as a player. It’s causing him a bit of discomfort and a bit of weakness in his arm, and hopefully he’s going to be right in a couple of weeks, and the neurologist is confident he’s going to be ok. He’s had some disc problems in the past but that’s not what’s causing the issue. It’s some nerve problem that he’s got at the moment.”

If Murray is giving Gatland a headache given he is the expected first-choice scrum-half, then the injury to Wales lock Jones will be keeping him up all night. Jones captained the Lions to victory in the 2013 series-clinching third Test over Australia in Sam Warburton’s absence, and the second-row is likely to have another important role to play this time around.

But he has not played since the Six Nations finished, having suffered a shoulder injury, and there have been suggestions that the injury is slightly worse than first feared. Again, Gatland’s message was clear.

“He’s making really good progress and again they’re confident he’s going to be right,” he said. “It’s not like a hamstring or a muscle strain, where you know there’s a time frame and players can recover from it. He’s got a little bit of a shoulder issue. He’s lifting some heavy weights in training but again you’d like to see him having a run under his belt for the Ospreys before the tour as well to make sure that we could be confident with some tough contact sessions, that we know that shoulder issue is going to be right.

Gatland added: “But the prognosis with him is a lot more positive than was first diagnosed in terms of it’s an unusual injury with a capsule thing, or something, but the prognosis and the recovery is hopefully a lot better than was potentially at first suspected.”

Jones could well have a similar role to play, with captain Warburton another heading into the tour currently on the sidelines with a knee injury that should clear up in time to return before the end of the domestic season, but Gatland admitted that the thought of appointing either a vice-captain or a leadership group has not crossed his mind.

“We haven’t got a vice-captain, you should have asked me that a few weeks ago, we might have selected one,” Gatland revealed. “It’s probably hard to do that, because the ideal scenario is that the captain and the vice-captain are playing together so there’s no doubt we’re going to need other players to fill the role in terms of captaining the team, Sam’s going to need a lot of support and leadership from players.”

Harltey could be called upon if there are injuries (Getty)

As is the way with team selections – particularly with a team as important as the Lions – those who haven’t made the cut are as much of the story as those who are. The likes of England captain Dylan Hartley, Ireland No 8 Jamie Heaslip and Scotland brother Jonny and Richie Gray have all missed on the squad, though may still find themselves with a job to do if called upon as an injury replacement.

But Gatland, nor any of his other coaches, have spoken to those players yet to remind them to stay fit, poised and ready to dash to the other side of the world if needed. Four years ago, England saw Brad Barritt, Billy Twelvetrees and Christian Wade leave the tour of Argentina for Australia, and with Eddie Jones taking his side to South America once again in Lions year, Gatland will know he can call on them if necessary.

Hartley becomes the third consecutive England captain to miss out on Lions selection, following Steve Borthwick in 2009 and Chris Robshaw four years ago. But even though Hartley missed out in the final selection meeting on Tuesday afternoon to Jamie George, Rory Best and Ken Owens, that doesn’t mean he’s the next man in line if an injury rules one of those three out.

“We haven’t even had that discussion,” Gatland said of Hartley’s faint chances. “Possibly yes. Until that happens, it’s hard for me to project that and give you a definitive answer. He’s definitely one of the players who’s been unlucky; it’s probably not the best thing to be an England captain in a Lions year. You’ve got to feel for him – he missed out in 2013 having been selected and he’s unlucky to have missed out this time.”