Great Interior Design Challenge

Amateur designers Scott, Fiona and Francesca design rooms in neighboring 17th century cottages.

Three new designers take on 1920s beach huts on Canford Cliffs beach.

Architectural historian Tom Dyckhoff joins designers in unlocking the history of three grand medieval homes in Lavenham, Suffolk.

Our amateur designers take on open-plan rooms in three Victorian houses in the heart of London's East End.

The designers must transform a bedroom each for three sisters living in a row of cottages.

Designers must update three identical living rooms in the handsome town of Welwyn Garden City.

The amateur designers redesign large open-plan reception rooms in modern "eco-homes" in Greater London.

Designers must transform master bedrooms in the Dutch-influenced model village of Port Sunlight.

In the last of the nine heats, three new designers tackle the master bedrooms of three 1930s Hollywood-inspired apartments in West London.

The amateurs take on awkward dimensions in converted oast houses.

The designers transform the reception rooms of three Edwardian houses in Wimbledon.

In this unique challenge, amateur designers transform multifunctional rooms in houseboats on the River Thames.

Three previous winners battle it out for two places in the semifinal.

Three previous winners compete for two places in the semifinal by transforming double-height reception rooms in an imposing Edwardian school conversion.

In the semifinal, four previous winners will work with higher stakes and a higher budget to convince the judges they deserve a place in the grand final.

To win the title, the final two designers must ace their final challenge: to transform three rooms with a budget of £4000 in just four days.