This is a 4-bedroom mews house built in the back garden of a protected structure. The construction is a 400mm cavity wall with blown full fill insulation and low conductivity wall ties. The systems in the house include a combi-gas condensation boiler, a flat panel solar thermal panel and a PV panel as well as an Aereco DCV system. Care has been taken to achieve an air tightness of 1.6m3@50pa and an A3 energy rating.
More information here.