Will my car fail the MoT due to broken front fog light?

The nearside front fog light on my 2013 Vauxhall Corsa doesn't work, I have changed the bulb but still not working, will my car fail its MoT because of this?

Where should a Crit'Air sticker be placed?

Official advice is to place the French Crit'Air sticker on the right side of vehicle windscreen but for most UK cars this will impinge more than 40mm into zone B and won't that therefore be an MoT failure?

Will my car fail its MoT because a door mirror indicator doesn't work?

My 2010 Hyundai ix35 has indicators in the door mirrors. One has failed. Does this mean that the car will fail its next MoT?

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...