Trouble is DVLA themselves, thay made a monumemtal balls up on my licence last year. Despite I and my manager pointing it out to them , they insisted they were in the right. So the manager said will you give me your decison in writing? They then said YES! So I could have legally driven for another five years! Fortunatley me and company decided to follow the protocol anyway, and uncovered something which could have ben nasty if not dealt with.