Strike: Inside the Unions 9pm, BBC Two The UK is seeing the biggest wave of strikes in a generation, and this crucial two-parter goes behind the scenes to find out exactly what’s happening. First, the RMT rail union, whose general secretary, Mick Lynch, says his piece along with those on the picket lines. The series also follows those involved with the Royal College of Nurses in a dispute that led nurses to withdraw their labour for the first time in the union’s 106-year history. The government declined to take part. Hollie Richardson Gordon Ramsay’s Future Food Stars 9pm, BBC One Ramsay takes the three finalists to Ibrox stadium – where his football career with Glasgow Rangers ended and his cooking career started – to take on the last task that could win them a £150,000 investment. They will need to create a Scottish limited edition of their foodie products to prove themselves worthy business partners. HR Last King of the Cross 9pm, Sky Max Following a brutal opening episode, the messy Australian crime drama – which doesn’t have the character depth to stop its violence and nudity from feeling gratuitous – continues. John (Lincoln Younes) looks to acquire his first bar. Jack Seale Open House: The Great Sex Experiment 10pm, Channel 4 The sexperiment continues, with childhood sweethearts Natalie and Tom wanting to spice up their relationship – will a hot tub with an open couple do the trick? Also, last week’s couple, Chanice and Richardo, are still at the retreat – it probably takes a lot of time to organise an orgy for 15 people in your bedroom, to be fair. HR Inside No 9 10pm, BBC Two It is the last episode of Steve Pemberton and Reece Shearsmith’s dark comedy anthology series – and what a stomach-churner it is. Longterm couple Joe and Chas head to their holiday home in the woods to make the most of their time together following Joe’s cancer diagnosis. But things take a turn after a luxury mud bath. HR Meet the Richardsons 10pm, Dave The mid-marriage crisis meta-comedy continues and trouble looms in the shape of Jon’s 40th birthday. He isn’t a birthday enthusiast: “Fingers crossed I’ll end up in a coma,” he deadpans. Lucy has a series of stressful “treats” planned, including a private cooking lesson from a grumpy Hugh Fearnley-Whittingstall. Phil Harrison Film choice Onoda: 10,000 Nights in the Jungle (Arthur Harari, 2021), 12.35am, Film4 The true story of a Japanese second world war soldier stationed in the Philippines, who hid out on an island and didn’t surrender until 1974, is a gift to fiction. Hiroo Onoda (played as a young man by Yûya Endô; older by Kanji Tsuda) is sent to Lubang to organise a guerrilla campaign. But after US forces invade he ends up camping rough with three others, refusing to believe his beloved country lost and determined to follow orders. There’s plenty of comedy in Arthur Harari’s film but, ultimately, it’s a tragic tale of futility: a man out of time, reduced to just surviving. Simon Wardell