How stricked are trackday people on helmets will a motor bike fullface helmet pass

that's what most people including me use. never seen anyone paying much attention to helmets.

Thats what I have used with no problems

Thanks. Guys
Off to Cadwell tomorrow my first
Trackday

Ive done 5 in last few yrs, and mines never even been checked. At bedford with MSV they were requesting either bike approved or msa/snell, but never checked.
I've seen some websites asking for msa/snell approved ones, but again I doubt anyone checks. Worst case you can hire one for about £10.