The oven suddenlyrefused to turn off after one hours activity
on gas mk.7.The control has turned fully to the off position and a spare knob replacement produces the same result. Gas is getting throughon the minimumm "simmer position

J.woodward, April 2017

By "knob" do you just mean the knob on the front control panel or do you mean the gas valve itself?

Sounds lik ethe gas valve is leaking - one would be tempted to suggest you get a Gas Safe certified engineer to look at it

http://www.buyspares.co.uk/belling/cooker-oven/hob-gas-valve/product.pl?pid=1908964&shop=belling&path=112737&refine=valve

acp, April 2017