Dr. Mark Evans, known for his veterinary background, is set to return as presenter for the fifth series of the water-based iteration of the Grand Designs television franchise. This series focuses on innovative residential projects situated on the UK’s extensive network of canals and rivers.

One featured project follows Karen and Tony Ainley, a retired couple who have embraced life as continuous cruisers. The Ainleys spend much of their time navigating the country’s 4,700 miles of waterways, and for their latest endeavor, they have commissioned a fully bespoke narrow boat designed specifically to suit their lifestyle.

Although the scale and stakes of these waterborne projects differ from those in traditional land-based versions of the show, tension remains a key element as builders and owners face the distinct challenges of constructing homes on the water. The series highlights both the practical and creative aspects of adapting living spaces to a mobile, aquatic environment, reflecting a growing interest in alternative housing solutions in the UK.

Details about the construction of the Ainleys’ custom narrow boat, as well as other featured builds, will be explored throughout the series, providing insight into the unique demands of waterborne architecture and the personal motivations behind these ambitious undertakings.