I was thinking of booking on the Bike Safe police course as I hear alot of good things.
....however I was wondering if I rock up with my akra (without DB killer) and not quite legal number plate size are they going to 1) turn me away 2) get legal on me!!
RTFM. terms and conditions on the website state "You will need legitimate access to a road legal, roadworthy motorcycle or scooter." So they'll have right to refuse you, maybe at loss of your payment if they only find out on the day so ask first?
Don't imagine they'll book you for anything then and there as they are trying to encourage good riding not catch people. Maybe they'd turn a blind eye to the plate (supposing it's not ridiculously small?) But can't imagine they'll stomach riding behind such a loud pipe given that it's not legal?