Halford are doing an offer to get a free mot when you buy something in one of their stores but it's a total scam. They fail your car on any small thing they can find, if one doesn't exist they make one up. Then they tell you they will do the work or if you take the car elsewhere and bring it back there is a retest fee. My car had done 14 miles after its last mot and I got my friend (an AA mechanic) to check it over before I took it in. Let's put it this way, the bulbs were all working fine when it arrived but when the mot was finished one had blown (all of a sudden). To cut a long story short the price was £8.99 for the bulb and £14.99 for the retest..