Looking for recommendations for a new double oven as mine decided to start playing up and not heating up any more . My current one is hotpoint which a think is about 11 year old .
The element in yours might have gone? They do go occasionally, but very cheap and easy to replace. Usually about £15 for the element from Amazon or any given spare parts website.
So long as it's reasonably well-constructed, there's not much to go wrong in an oven? I find the element can go, or the timer. (Who decided ovens should copy VCRs and not work until the time is set...!) Both of these can usually be replaced easily.