Rating: At a stately home on Mars, some time in the 22nd century, in the warm ember glow of its two moons, a polite crowd will gather with armfuls of domestic treasures for another edition of Antiques Roadshow (BBC1). Some of the valuation experts will be triple-headed extraterrestrials from Alpha Centauri, but they’ll all be wearing tweed waistcoats and spotted bow ties — so it really won’t look that alien. Inevitably, one of the items for inspection will be a face mask from the Millennium’s early Twenties. ‘Ah yes,’ the specialist will burble, ‘these were once very common, but they’re priceless museum pieces now. Your great-granny bought a whole packet of them in 2021, you believe? What a shame she didn’t keep them all.’