Oven tripping breaker UK

My 11 year old oven has started tripping the whole house electrics when it’s switched on, even if I just try to switch on the oven light and not any form of heating.

Phoned an electrician who said it’s probably the heating element and it’s better off buying a new oven than replacing the element. He said he’s saving me money by diagnosing on the phone, but I wasn’t sure whether to get someone out to find the fault and see if it’s repairable before buying a whole new oven?

Do you think it sounds like the heating element and if so is it really better to get a new oven rather than replace the element?

Thanks!