Does a Cat N write off need a certificate after repairs so that it is approved to drive again?

If buying a car with a Category N, do I need a certificate after repairs so that it is approved to drive again?

My car was a Cat N write off - how do I re-insure it?

My car was a Cat N write off. A settlement has been agreed but do I have to re-insure the car and do I need to contact the DVLA? The car was bought back from insurance company.

Will the fact my car has been classified a Cat N write off affect the price of insurance?

My car was hit last year and although there isn’t much damage it wasn’t economical to fix so the other party’s insurance covered the cost of repair (my insurance weren’t involved). The car wasn’t repaired...