Trainee teacher and club DJ Josh Jones hosts the fourth night in Dumfries and Galloway, and hopes he can broaden his fellow contestants' palates with his menu of Indian food. He plans lamb pasanda and tandoori monkfish, but Tammy Rice finds something in her glass that wasn't on the menu. However, Josh hopes his disco entertainment might impress the guests enough to bag him the £1,000 prize

Tammy Rice hosts the final evening in Dumfries and Galloway, hoping to win the £1,000 prize with her no-nonsense approach and traditional Scottish fare. The dinner-party novice rustles up chorizo and cous cous stuffed peppers for her starter and incorporates haggis into her chicken-based main course

The funnyman climbs into the driver's cab to take charge of some of the world's most iconic locomotives, learning what it takes to keep them running and meeting the people who keep the railways running. On the Isle of Wight, Paul follows in the footsteps of his tube driver dad by riding up front on the very trains his father would have driven on the Northern Line - now in service on the island. After driving a heritage steam, Paul helps a cow give birth. His journey finishes with a look at how the island was prepared in secret to help with D-Day

The kennel takes a shot on Bulut, a wary stray Malinois who showed up in the middle of the night. Bailey the cocker spaniel faces the challenge of living up to expectations, while for Moose the staffy, it's a chance at second-time luck

Alison Hammond presents the show giving people the chance to perform the one song that tells their story - often in front of a crowd for the very first time. Mentors Paloma Faith and Sam Ryder watch and listen to the performances. In the first episode, Alison heads to Liverpool, where a teenager sings Bocelli for the foster mum he can't find words to thank, and a kidney transplant recipient brings Sam and Paloma sprinting out into the downpour. With only one place available at the grand final at London's Hackney Empire, Sam and Paloma face an impossible choice

Emmett J Scanlan, Mark Wright, Nella Rose, Mutya Buena and Ralf Little take part in the culinary challenge, with guest judge Cherish Finden joining regulars Paul Hollywood, Noel Fielding and Alison Hammond. The contestants make Signature pull-apart savoury rolls and grapple with vegan fruit tarts in the Technical. And for the Showstopper, the celebs recreate their most ridiculous purchase ever

The armchair critics share their opinions on what they have been watching during the week, with cameras capturing their instant reactions