[8] Captaining the trike team, he received a gold medal for the Men's IRecB1 Recumbent Circuit Race, as part of a British trio who crossed the finishing line together.

[11] Chalmers subsequently presented National Paralympic Day for Channel 4,[12] as well as an online show for the 2015 IPC Athletics World Championships in Doha.

[12] After returning from Rio he hosted the Team GB Olympics and Paralympics Homecoming Parade in Manchester,[14] alongside Mark Chapman and Helen Skelton.

[18] In 2018 he worked as a trackside reporter for BBC Sport at the World Athletics Indoor Championships, then as 5 Live's main reporter of the 2018 Winter Paralympics in Pyeongchang, before presenting for BBC Sport's coverage of the Commonwealth Games in the Gold Coast and the 2018 Invictus Games in Sydney.

In March 2021, the BBC announced that Chalmers would be joining Sarah Moore and Jacqui Joseph as a presenter on Money For Nothing.

[23] In April, Chalmers was part of the BBC presentation team covering the funeral of Prince Philip, Duke of Edinburgh.

[28] In November 2022, Chalmers was the anchor presenter for the BBC coverage of the Wheelchair Rugby League World Cup.

[citation needed] In August 2023, Chalmers co-presented The Royal Edinburgh Military Tattoo with Jennifer Reoch for BBC One.