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27th January 2021 9pm Channel 4


Energy Conservationist Andrew has decided to put his money where his mouth is, by sinking all his savings into building a radical, self-heating home for his family – the first of its kind in the UK. Remarkably he aims to heat the house all year round by storing the warmth of the summer sun into insulated earth banks over and around the house, and then drawing the warmth back into the living spaces in winter. Heated by nature, there won’t be a single radiator in sight.  Whilst wife Margretta (a former midwife) yearns for a contemporary and beautiful house, Andrew’s focus will be primarily on his gigantic thermal experiment. As the house is built he will repeatedly collect data through a mass of probes, determined to push the boundaries of science.  


But from the start this pioneering construction seems an exercise in trial and error. Andrew's initial design is vetoed as ‘unsafe’ by his structural engineer before he’s even broken ground. In fact what begins as a seemingly simple, pure concept becomes a complicated feat of earth moving and engineering, testing their aggressively small £300k budget and Margretta’s patience to the limit. Even as the build spirals well over its 18-month schedule, and with Andrew’s professional reputation at stake, the question still remains - will the house even work?  

Bletchley Suppliers List

Suppliers List

The following list of suppliers is for information purposes only and no representation or endorsement is made by us in respect of these suppliers.

Company Name
Building Services
Builder's Merchant
Concrete Pumping
Dining Chairs
Fixtures and Fittings in Kitchen
Design and Main Contractor
Glazing and Sliding Doors
FLIR Thermal Camera
GGBS Concrete and Screed
Glazing Installer
Heat Pump (Air-Source) 
Kitchen Doors and Handles
Metal Coping
Plant Nursery 
Shower waste-water heat recovery
Off-grid Sewerage
Strucutral Engineer
Spiral Staircase
Structure Formwork
Timber cladding
Thermal Store
Zebra artwork in living area
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