Kevin McCloud meets retired racehorse breeder John and his wife Helen in Dunstable. The couple met at Newbury races in 2005 and wed two years later, living together in a 17th-century farmhouse until illness struck in 2018. Helen had a catastrophic stroke, severely affecting her mobility and leaving her with aphasia, which affects her ability to communicate. Constrained by the steep stairs, narrow doorways and changes in level of their current home, John resolved to make a big change in their lives with the purchase of a nearby two-acre plot. Following the demolition of an old, dilapidated house on site, a new high-tech accessible pavilion, complete with wildlife garden, will be built in its place for £1.3million.

In 2011, Edward and Hazel set out to build a lighthouse on the north Devon coast. By 2019, they were near bankruptcy with just a rusting shell. Three years on, has anything changed?