Even if a recovery truck is genuinly mot exempt you should still speak to vosa about the guidelines, i did but only after i had bought my truck and was told that it must be maintained upto there standards. And to be honest its much easier to mot it than maintain upto there standards, each vosa mot tester has there own ideas about an mot test mine failed so i took it away and done all the work a month lapsed so i had to pay for a full test which was ok but to my astonishment ity failed again on items that where just as it was first time round when i asked in the office why i was told you must of been luky first time. SO BE CAREFUL OUT THERE !!!