Is it the glass globe that's stuck, Mr.P?
It could be bayonet or screwed, I fear - but a little WD cant do any harm......keep it off the elements though, they'll pong afterwards.
Keep working the thing - it'll give up eventually.
John
Thats the cover for the bulb, usually bayonet so 1/4 turn anticlockwise and pull.Some are not accessible from inside the oven , is there a small cover on the outside casing?
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