Salus thermostat (Broomhill S10)
Both the boiler unit (which needs fitting by plumber or electrician) and the wall-mounted (battery-operated, wireless) thermostat. It works: we replaced it because we were having a problem with hot water temperature and couldn't get to the bottom of it but it turned out not to be the thermostat.
This offer has been gifted to someone and is no longer available.