Hosted by broadcaster and self-confessed superfan, Greg James, each episode will premiere on More4 directly after the weekly broadcast of Grand Designs on Channel 4.

Each week, Greg James will sit down with Grand Designs host, Kevin McCloud to ask the questions viewers most want answered. Together, they'll reflect on the episode and take a deeper look at the build, with an informal and engaging exchange that brings out the detail and decision-making behind each project.