Sure, the police should only stop you if they have good reason (and despite what many police think, being black and driving a flash car is not a good reason

). If you have committed an offence (eg speeding) and they are going to give you a ticket then you will need some kind of ID if they're going to issue you a producer. If you have got your driving license, insurance documents and MOT certificate (if applicable) with you at the time then there's no reason for them to issue a producer.
When photo ID licenses first came out in the UK I got one as soon as it was possible. Unfortunately they couldn't even get the photo licenses right since you still have to carry that stupid A4 sheet of paper for writing in endorsements around with you for it to be valid. I rent cars frequently in the UK and the number of people I've seen "going postal" because the rent-a-car agent has just told them they can't pick up the car because they don't have that A4 sheet with them just isn't funny. Most people have probably binned it. I mean WTF is the point of a nice little credit card sized license that fits nicely into your wallet if you still have to carry that archaic old document around to make it valid? :inferno:
If you have to change your license for any reason (moving house, removing endorsements) you can now only get a photo one.
Michael.