Hi all, got me MOT coming up and a few potential issues are outstanding and Im not sure whether they will need sorting or not.. if they do i would rather get them down beforehand!

Firstly, when I turn ignition on my airbag light warning light stays on for a few seconds after startup.. someone has hinted to me that this might be a fail? or just advisory?

Secondly, a while ago I snapped a locking bolt in my rear drum.. still havent got it sorted so Ive only got three bolts holding the rear wheel on.. is this a fail?

Finally, my NS front wishbone bushing squeaks alot everytime i drive.. it also clunks whenever a longitudinal force is applied along the car when braking or accelerating. is this squeak or clunk likely to cause an MOT fail? Im not sure whether there is 'excess travel' or not..

Would be greatful for any tips and advice!
Cheers,

Chris