You'll be ok dude.
To be extra safe you can buy cheap db killers to shove in the end of your exaust
http://www.bikeit.co.uk/exhausts/viperbafflekit.htm I'm taking some to Assen too!!
Rich @ Louigi Moto sells em, 01761 453366 (Somerset). His superbike racer Tom is the rep for Bike It.
Otherwise if you want nice ones, I think Mark Hill @ MHP is your man 01932 336883 (Surrey)