roythebus wrote:
OK, but if there was a police officer or a VOSA official there as well, either of those could demand to see your badge.
Ignorance is no defence in the eyes of the law, whether it is yours or the council's ignorance. A possible defence could be along the lines you state; that would mean the council being questioned about their ignorance in court and could be used by you as mitigating circumstance.
I doubt very much that this would ever end up in court

Just because a private hire driver hasn't worn his badge driving a private hire vehicle off shift does not mean he is at that time not licensed to drive that vehicle, this is a totally different case to a hackney carriage driver driving a private hire vehicle off shift.
Here is an interesting extract, wonder what they dug up in legislations to prevent a council fining drivers for not wearing their badges:
"Fixed penalty fine scheme
a2z licensing took action against Calderdale Council, which had been imposing fixed penalty notices on taxi drivers for minor infringements of their taxi licence such as not wearing a name badge.
Calderdale Council's licensing committee reviewed the report written by a2z licensing and abandoned the scheme, issuing nearly £5000 in refunds."A2Z Licensing
http://www.a2zlicensing.co.uk/Taxi-and- ... re(2383685).htm