My boiler has packed in. Its an ancient Concord WRS 240 and it seems theres a fault with either the gas valve or the thermostat. There is still a pilot light and I've confirmed the 240 supply to the back of the thermostat control box. I've done a search but can't find any parts specific to this boiler, probably cos its so old. Is there anyone here who might know where to look, or suggest any dedicated forums to ask in, or preferably suggest any modern compatible parts.