Id honestly check what they are actually going to do before you book it in. It may state Major service but some, well most, times their idea of a major service is different to yours. I have done a lot of research on the subject lately and most "major" services mean just a look around your car and an oil change basically. You would be better off with an MOT and an independent oil and filter change from a good garage. At the average cost of between £200-£300+ id want more for my money. Of course if you can prove me wrong please feel free. I certainly wont be offended. :)