Thanks for your response tubafan, good to know of your experience.
The more I read about my issue,!I’m confident it’s the oven stat, which affixes to the rear of the knob assembly, as I’m still able to rotate the knob and turn the circulation fan on and off and the operation of the knob/switch feels good, also in normal operation, the oven element wouldn’t glow orange within 60 seconds
I’ve not took the oven apart yet to look into it further and the hob, grill and top oven are all still working, not even missed the use of main oven.