My leisure oven flames up when turned on but I can't turn it up so it looks like it's on gas mark 1 permanently. All the gases on the hob work fine !!

SOURCE: Gas in main oven

hello, i have looked into the problem and have come up with a fix for mine at least. take out all the trays, and peer into the rear. you will see a silver section which has three srcews. remove the centre one to get access to the burner which has the white igniter on it. this just slips sideways and off. with the aid of a small mirror you should see a small brass nut where the gas comes from. there is a small pinhole in the centre,mine was slightly blocked and this reduced the flow of gas. i cleaned this with a pin and the gas flow improved. i am not an expert and take no responsibilty if it goes wrong. it appears to have worked for me so the choice is yours.
regards. flask