THE upcoming season of the Northern Irish comedy TV series Derry Girls may very well be its last.

Actor Tommy Tiernan who plays Gerry, the "da" of main character, Erin, let slip the lovable series won't be back after its third season.

6 Derry Girls became the most watched show in Northern Ireland Credit: Channel 4

Tommy, 50, was speaking on The Jason Manford Show on Absolute Radio when he revealed the devastating news.

When asked what the future holds for Derry Girls, Tommy said: “This is the last series, I think. As far as I know this is the very last series.”

Filming for the final series will begin in March and will continue to follow the lives of Catholic high schoolers Erin (Saoirse Monica Jackson), Nicola Coughlan (Clare), Orla (Lousia Harland), Michelle (Jamie-Lee O'Donnell) and James (Dylan Llewellyn) as they navigate coming of age during Northern Ireland's Troubles.

The show flicks between comedy and heartbreak as the teenagers try to get on with their lives during the early 90s, at a time of deep divide between Catholic and Protestant Ireland.

6 Comedian Tommy Tiernan plays Gerry on Derry Girls

6 Tommy can't look at Kathy Kiera Clarke when she plays Aunt Sarah, because she makes him laugh

6 Derry Girls became a worldwide smash after it first aired in 2018 Credit: This picture may be used solely for Channel 4 programme publicity purposes in connection w

Tommy plays "oppressed husband" Gerry, who is browbeaten by his live-in father-in-law and tries his very best when it comes to his family.

The comedian admitted he struggles to even look at some of his cast mates during shoots otherwise he'll end up laughing and ruining the scene.

“I feel lucky to be working with such funny people. There are two members of the cast that I can’t look at because I laugh," he told Jason.

"It’s enough to bring you out in sweats. Kathy Kiera Clarke who plays my sister-in-law. Kathy is one of the funniest people that I’ve ever worked with and I’m just not able to look at her."

6 Tommy Tiernan (R) delivered the bad news on the The Jason Manford Show on Absolute Radio

Tommy added: “We start shooting again in April. I mean this sincerely, as soon as I get the scripts I will rifle through it, first of all to see my own scenes and then to pray to God that I don’t have an awful lot of scenes with her, because I’ll be getting the sweats the night before. Like how can I keep a straight face? We find it very difficult… and I also find it impossible to look at Orla who’s her daughter”

Even though Tommy was the one to reveal that Derry Girls was coming to an end, he also admitted he got kept in the dark by series writer and creator, Lisa McGee.

When asked if Lisa has decided to end the series on a funny note, Tommy, “I’ve no idea. She doesn’t speak to us!”

Derry Girls first aired on Channel 4 in 2018 and soon became a cult hit and the most watched show in Northern Ireland.

It was then added to Netflix and quickly became a global smash.

6 He hosted The Tommy Tiernan Show for 10 episodes and was praised for his interview style Credit: MELISSAMANNION.COM

More in TV & Showbiz HOLDEN A MINUTE! Amanda Holden and Jenni Falconer turn up to work in the exact same dress Exclusive BRIGHT move Lydia Bright is now a MILLIONAIRE after Towie thanks to huge property empire CAR SWASH Joe Swash surprises Stacey Solomon with epic £50,000 campervan for the family Exclusive MEL HELL 'Cheating' nanny helps Mel B's ex buy £1m pad while she lives in bungalow with mum Exclusive DES-GUSTING ITV's Dennis Nilsen drama Des hit by Ofcom complaints from horrified viewers Exclusive FEAR THE AXE Eamonn Holmes & Ruth Langsford fear This Morning AXE amid ITV diversity drive

Tommy has disappointed his fans for a second time this week after revealing that the recent tenth episode of his popular Saturday night talk show, The Tommy Tiernan Show, would be the show's last.

The actor won wide praise for his unique interview style, with many wondering what they were going to do with their Saturday nights from now on.

Even musician Niall Breslin was disappointed, writing on Twitter: "I can’t get head around how good #TommyTiernanShow is. It’s almost like he has invented his own genre of interview style. Just top class."

The Jason Manford Show airs on Absolute Radio, every Sunday from 8am.