John has helped me on several occasions, most recently after a supposed Windows 8.1 automatic update went very wrong and resulted in a number of key systems not working. He could have just wiped the pc and reinstalled Windows but because of the volume of data and the number of applications did a lot of work to identify the problems and resolve them, whilst also retaining my files and applications rogrammes. Even though the problem was more complex than he originally thought he kept to his quoted price. He has always been very helpful, quick and competitive on price. Have no hesitation in recommending him.