Grand Designs: Trade Secrets

The inside track on castles: Kevin and the team have tracked down a challenging selection of wrecks and ruins available to buy and Naomi and Deborah offer hints and tips on how to transform a dark drafty castle into an über-cool home.

Kevin is joined by Naomi Cleaver with her tips on creating a luxury country interior and roving reporter Tom Dyckhoff will be in Holland, searching out the most cutting edge thatch.

Naomi Cleaver has everything you need to know about creating cool chic from other people's rubbish, while Tom Dyckhoff discovers a beautiful building built from discarded car tyres.

Kevin McCloud and Naomi Cleaver look at the do's and don't's of penthouses, crucial advice for any would-be grand designer and Tom Dyckhoff looks at ways we could all be building on other people's rooftops.

How to create an eco house that doesn't look as though you've knitted it yourself while Naomi Cleaver dispenses interior design tips on how to make our homes happier and healthier.

Tom Dyckhoff investigates how to convert a church in to a home, and Naomi Cleaver has everything you need to know about salvage, what to use and where.

Naomi Cleaver, Tom Dykhoff, Kevin McCloud and Deborah Saunt explore the underground world of earth shelters and explain why you can't afford to stay in the dark when it comes to lighting.

Naomi Cleaver, Tom Dykhoff, Kevin McCloud and Deborah Saunt tackle the tricky business of how to build on difficult plots.

Minimalism laid bare as Naomi Cleaver, Tom Dykhoff, Kevin McCloud and Deborah Saunt give the low down on how to get the look right.

Naomi Cleaver, Tom Dyckhoff, Kevin McCloud and Deborah Saunt demonstrate how to go gothic, without going Addams Family.

Naomi Cleaver, Tom Dyckhoff, Kevin McCloud and Deborah Saunt tackle the tricky business of building a contemporary house in the countryside.

Naomi Cleaver, Tom Dyckhoff, Kevin McCloud and Deborah Saunt put the fab back into prefab and show why choosing a kit house makes perfect sense.