The engineer had the thermostat out but did not fit it due to our wiring. Cost over £100.
3 x Honeywell t4M Thermostat, Programmable Modulating Thermostat
Honeywell TH2110DH1002 Thermostat, Horizontal PRO 2000 5+2 Day Programmable - Backlit, 1H/1C Dual Powered by Honeywell
Honeywell T3R Thermostat New, Wireless, Programmable Thermostat
Honeywell Home Thermostat, White
Honeywell Home Thermostat Guard, 5.88 x 5.88 x 2.5 inches Clear
Honeywell Wireless Thermostat and Receiver
