I am a qualified vehicle tech and have been in the trade for over 10 years and also an MOT tester.unfortunately the company I work for only MOT in house due to the nature of its business. My fathers MOT was due up so he asked me to check his car over as he'd booked it in at your Nottingham Huntingdon street branch. When I checked it over I found that the suspension arm ball joint covers had minor splits in. These could be an MOT failure if they are excessively deteriorated to an extent that they are no longer preventing dirt and ingress.see section 2.4 of the MOT manual. However they weren't they were very minor, regardless I fitted new covers but over the old ones so they were 'doubled up' so no way dirt could get into the ball joint. So if I would of been able to MOT the vehicle it would of been passed but with an advisory notice but having done them it should of passed with flying colours. So having hearing from my father it had failed I was shocked as this reflects bad on my workman ship. Anyway ramping the car found that it looked as if the cover had been pushed or peeled back. Already bought more dust covers I carried on and replaced it once again. To only hear today that the MOT tester failed it again. This was questioned this time and was told that the tester had pressed against the cover pushing it away from the joint, said he'd saw grease end of. Even if the ball joint was brand new if you pushed the cover away from the joint you would reveal grease. The work this entails is probably 1 hour at the most plus a dust cover at approx £3 but this is frustrating for my father and myself this has happened.I would like to put this to the ministry but unlike your Tester I haves conscience and don't just think about making money or putting people down. I would also like to add that he was quoted an extortionate amount for the repair and was told we don't mess about with just covers it would need a new arm. My father only decided to use your services as he'd got a voucher from somewhere for £10 MOT. In future he nor anybody I know will be told to avoid as I see your £10 mot a ploy to draw you in then have your pants down for unnecessary repairs at extortionate costs.fortunately he hasn't been ripped off just a massive mess about.well done Halfords.