In article ], ] says...
The pilot light on my gas fire won't stay on.

Any ideas?

As soon as I release the gas push-button, after the recommended twenty
seconds, the pilot light goes out.

I have a "living flame" gas fire that does this - the thermocouple
doesn't get warm enough and the gas cuts out because it thinks the pilot
light has gone out. If I warm the thermocouple with a blowlamp the
pilot light manages to keep it warm and the pilot stays lit. It could
be that the thermocouple is faulty or wrongly positioned, or that the
pilot jet is partially blocked.