It's an Ideal Concorder WRS 255A - I know it's very old and inefficient but it has been working without any problems for donkeys years!
We noticed the rads were cold so assumed the pilot light had blown out in the wind or somesuch. Tried to relight it. The pilot flame lights, but will not stay lit however long I keep the gas control knob pressed. Therefore I assume its probably the pilot light thermocouple thats faulty. Would this be correct? Any simple tests I can do to confirm? I'm guessing its a simple job to replace (assuming I can get a new one at weekend) but any tips would be welcome.