Eddie Jones has called on his England side to approach Saturday’s World Cup final against South Africa with no fear after naming an unchanged side to face the Springboks.

Kyle Sinckler has been passed fit after sustaining a calf injury in the semi-final victory over New Zealand, while Jones has stuck by George Ford at fly-half with the captain Owen Farrell continuing at outside-centre.

Sinckler’s training routine has been largely restricted this week but, while he spent the first part of Wednesday session away from the squad, it is understood he later joined in with his teammates. It is a significant boost for Jones, not only because of Sinckler’s impressive recent form but also because Joe Marler will be forced into providing emergency tighthead cover.

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With Jones naming an unchanged England side for only the second time and the first since the 2016 Six Nations, there is only one change to the matchday 23 as Ben Spencer replaces the injured Willi Heinz as the replacement scrum-half. Spencer arrived in Japan on Monday and has spent the week getting up to speed and if he comes off the bench he will make his World Cup debut in the final.

Ford continues at fly-half after orchestrating England’s 19-7 win over the All Blacks, when he took over goalkicking responsibilities with Farrell struggling with a dead leg. Against Australia in the quarter-final, Ford was dropped with Jones bolstering his midfield to counter the threat of the Wallabies’ Samu Kerevi. South Africa have a similarly powerful runner in Damian de Allende at inside centre but Jones has resisted any temptations to restore Henry Slade to the starting lineup.

“We want to play with no fear on Saturday, just get out there and play the game,” said Jones, who takes charge of England for the 50th time. “We know South Africa aren’t going to give us the game, they are going to come hard. We’ve got to meet their physicality but we are looking forward to that and being able to impose our game on them.

“We can definitely play better, there’s no doubt about it. The players know that. I have been so impressed by the preparation of players throughout the tournament and particularly this week, there’s a steeliness about them but also a nice relaxed feeling because they know they’ve done the work so they can get on with the job.”

Facebook Twitter Pinterest Kyle Sinckler does some stretches during training this week. Photograph: Tom Jenkins/The Guardian

Courtney Lawes continues in the second row alongside Maro Itoje, with George Kruis again among the replacements. Mako Vunipola, Jamie George are alongside Sinckler in the front row while Tom Curry and Sam Underill are again named as the flankers and Billy Vunipola at No 8. Ben Youngs continues at scrum-half with Manu Tuilagi at outside centre while the back-three is comprised of Elliot Daly, Anthony Watson and Jonny May.

“The great thing for us is we know we’ve done the preparation, we’re ready for this occasion,” added Jones. “We’ve spent four years getting ready for this occasion. That’s why the players can be relaxed, that’s why I can be relaxed because we know we’ve done the work but we are not relaxed about knowing what’s in front of us.

“We know South Africa’s going to come hard. They’ve got a history of being the most physically intimidating team in the world, so we’ve got to take that away from them. he boys know what’s ahead of them, everyone knows what’s at stake but because we’ve had such a good preparation we know we can go out there and play without any fear.”

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England: Elliot Daly; Anthony Watson, Manu Tuilagi, Owen Farrell (captain); Jonny May, George Ford, Ben Youngs; Mako Vunipola, Jamie George, Kyle Sinckler, Maro Itoje, Courtney Lawes, Tom Curry, Sam Underhill, Billy Vunipola. Replacements: Luke Cowan-Dickie, Joe Marler, Dan Cole, George Kruis, Mark Wilson, Ben Spencer, Henry Slade, Jonathan Joseph.