Trackday car rules and protocol

[Ilovecbrs599999]

1) Do I need to be insured on it for road use?
2) Does it even need to be road legal?
3) Will it need to have an MOT to make sure it's roadworthy and isn't gonna explode on track even if isn't road legal?
4) For those who have none road legal cars how do you get it to the track?

[Ilovecbrs599999]

As you can tell from my username I like motorbikes- apart from the cage bit those answers also reply to motorcycle track days?