I got a pull last year coming out of Laxey, speeding, not excessively and a genuine mistake, but speeding non the less.
All the officer wanted was to see proof of identify, I had my old photo card driving licence, (out of date, not my current one) but he was ok with that, he then checked my insurance and MOT by UK PNC, it said I had insurance, but no MOT, (however my bike was under 3years old, I explained that, he said it didn't matter and they aren't bothered re MOT and was just mentioning it.

Back at my digs I had photocopies of my insurance, and current driving licence, as I always have.