How can i get my glowworm 240/6 back bioler to lite up?

make sure the gas valve knob is turned to the flame symbol and not the spark symbol, if it is and you are sure the pilot is alight then turn the stat, it it clicks then you will need to test if there is 240v at the gas valve,
this really is a job for a proffessional due to the safety implication related to old open flued appliances.

MIKE
October 2006