In Devon, George meets Val, who's invested her life savings into building a stargazing cabin with a twist. George also visits a vintage horsebox and a Norwegian Viking-inspired longhouse.

Chitty Chitty Bang Bang gets an extension on the Isle of Wight. Plus: a Moroccan oasis in the Cotswolds, and George seeks inspiration for his secret garden studio flat.

An ambulance gets a new lease of life as a ski chalet on wheels, an oil rig lifeboat owner makes his build shipshape, and George and Will experience a slice of Africa in the Midlands.

A 1920s railway carriage is converted into a luxury gym and sauna, a Victorian lady's loo is turned into a romantic getaway and George visits a French chateau in Buckinghamshire.

A VW gets a transformation, a bomb shelter's converted into a bijou bar.

A couple create an ambitious floating home, George and Will make a magical vista in their garden flat, and two siblings build their own mobile homes away from home

A touring theatre performer has an ingenious plan to keep the show on the road, quite literally. George and Will complete their studio flat that also converts into a magical secret garden.

George and Will Hardie aim to build a beach hut that can sleep four and float, but they only have six square metres. They seek inspiration from a high-end hut in Dorset, an ingenious space-saving houseboat in Germany and a 'half house' in London.

George and Will Hardie take inspiration from an 1830s camera obscura and a futuristic planetarium to create an observatory in honour of George's star-loving late father.