Gladiators: Celebrity Special BBC One, 6pm
Rob Beckett, Joel Dommett, Louise Minchin and Ellie Taylor are the brave (or foolish, depending on how you look at it) souls taking on the current crop of superfit gladiators. Only two will survive to go head-to-head in the Eliminator.
The Traitors BBC One, 8pm
Claudia Winkleman introduces the latest competitors in the game of detection and betrayal. Turn over to BBC Two at 9pm for spin-off show The Traitors: Uncloaked.
SAS Rogue Heroes BBC One, 9pm
Steven ‘Peaky Blinders’ Knight’s drama about the founding of the military group returns. It’s now 1943 and the battalion has a new leader, but its future is in doubt as the war in Europe rages on.
Carna an Cheoil agus na nAmhrán TG4, 9.20pm A look at Carna in Connemara’s rich cultural heritage, which includes songs, music, dance and storytelling, all of which continue to fascinate historians today.
Róise & Frank TG4, 7.45pm
Offbeat drama in which a grieving woman becomes convinced that a dog is the reincarnation of her dead husband. Bríd Ní Neachtain and Cillian O’Gairbhi star.
Where the Crawdads Sing RTÉ2, 9pm
A lawyer sets out to clear the name of a non-conformist young woman accused of murdering her boyfriend in America’s Deep South during the late-1960s. Daisy Edgar-Jones stars in this taut drama.
Downton Abbey: A New Era RTÉ One, 9.30pm The second movie spin-off from the period drama series sees the Crawley clan deal with a film being made at the Abbey while also investigating a mysterious legacy. Maggie Smith heads the cast.
Missing You Netflix, streaming now
There’s nothing more necessary than sinking one’s frazzled teeth into a compelling series on New Year’s Day. Starring Slow Horses’s Rosalind Eleazar, she now plays Detective Kat Donovan — who’s equally tragic in love. Her supposedly dead partner from a decade ago pops up on a dating site.
The Love Scam Netflix, streaming now
If you fancy some farce on New Year’s Day, consider two brothers who concoct a plan to scam a wealthy heiress to save their home in Naples — but unexpected love soon throws a spanner in the works.
Evil Netflix, streaming now
A new season lands to show us what happens when a forensic psychologist partners with a Catholic priest-in-training to investigate miracles and demonic possession.
Millionaire Matchmaker Netflix, streaming now
Meet Patti Stanger. She’s a matchmaker running the Millionaire’s Club, a service devoted to helping wealthy singles find love. Seasons five, six and seven may not bring the warm and fuzzies instilled by The Later Daters, but it’s decent Chrimbo binge-watching.
Don’t Die Netflix, streaming now
I’m not sure who needs to watch this on New Year’s Day, a time when a large proportion of the global population is feeling near death’s door, but the programming schedulers at Netflix have other ideas. Meet tech entrepreneur Bryan Johnson, a man who’s determined not to die any time soon. In fact, he’s dedicated his life to defying the ageing process. So extreme are his practices that filmmaker Chris Smith (the man responsible for giving us Fyre and 100 Foot Wave) has made this documentary following Johnson’s controversial wellness practices. Between necking a reported 100 pills per day, not consuming any food after 11am and denying himself a drop of alcohol or anything resembling a social life… one could wonder if Johnson is living at all. Moreover, what impact does Bryan’s all-consuming, alleged $2m-a-year quest for immortality have on those around him? For instance, his teenage son, whose plasma he’s siphoned…