| It might be worth you checking what the local Force policy is for tyres in your area.
If like mine its VDRS first, you may well of been discriminated against, ie- why for one tyre that wasnt exceptionally bad did they go straight to EFPN. If it was that bad, i would of prohibited your bike!
By the mere fact you were allowed to continue on on the bike it couldnt of been that bad! and if it was are they leaving themselves open to allowing you to continue on on a dangerous bike?
It could well of been a probationer learning how to complete a EFPN ??
This would be the route i would go down, enquire, then complain sensibly! | 
Threaded Mode