He helps a couple restore a family cottage in Derbyshire. Plus: skincare made from waste tomato ketchup in Dragon’s Den. Here’s what to watch this evening He helps a couple restore a family cottage in Derbyshire. Plus: skincare made from waste tomato ketchup in Dragon’s Den. Here’s what to watch this evening 8pm, Channel 4 The celebrity architect returns to meet people taking on huge building projects for powerful personal reasons. He starts in Derbyshire, where married couple Lauren and Lee