My car was written off as a Cat N - do I have to get it re-tested for an MoT?

I know insurers require a new MoT for a vehicle that was a Cat N write off. They have given me 14 days to obtain one but is it a legal requirement? Could I still drive on the existing MoT? Also if it fails...

What checks should I do before buying a Cat S car?

What paperwork should I ask for from a garage if I'm buying a Cat S car? Must I have a structural report? The car my son is looking at is less than 3 years old, so no MOT required. The garage is saying...

Is a car whose airbags have deployed automatically a write off?

Is it true insurance companies will generally write off a car whose airbags have deployed?