BBC Knowledge, 9.30pm
Dragon’s Den is the UK version of what we call Shark Tank — entrepreneurs being pitched investment opportunities. These guys are tough as nails, especially Deborah Meaden, who’s not afraid to resort to outright guilt-tripping. The most brilliant thing about tonight’s season return is a bloke who’s a dead ringer for Steve Coogan’s deluded character, Alan Partridge. Tiny pencils, giant beanbags, a boot-cleaning device invented by a 15-year-old footy fan and craft booze subscriptions are on offer.