Thomas made his Super League début for the London Broncos in 2014, against St. Helens.

Thomas made his début for the London Skolars in 2013 against West Wales Raiders in the Northern Rail Cup.

Then after a six-week spell out injured played against his future club Sheffield Eagles, then against Workington Town.

He featured in the Round 20 match against Leigh Centurions, a then title dog fight clash.

He was released at the end of the season and subsequently signed for Sheffield Eagles on a one-year deal.

[3] He featured in the Eagles' pre-season friendly against his former employers Bradford Bulls where he scored a try and converted upon his return.

On 30 Nov 2021 it was reported that he had signed for Workington Town in the RFL Championship[4] On 24 Jul 2023 it was reported that he had signed for Keighley Cougars in the RFL Championship[5] Thomas was selected in the Scotland squad for the 2014 European Cup.

He started the game against Ireland at fullback which Scotland won 25-4 before featuring in the halves in the 22–38 loss to France.