Edworthy Computing appear to have ripped off my brother when his computer's PSU failed. We asked them to check the computer and fit a new PSU if needed. They charged £27 for the PSU which they ordered and £55 for labour which seem about right (a new PSU costs £10 for a cheap one, £30 for a decent 600W one) but the PSU they fitted wasn't the new we asked for but but a second hand one that'd been running in another computer for at least a year and collected a large amount of dust. I'm currently chasing this up with the company. I'm a qualified Electronic Engineer and very experienced system builder and administrator so can safely say that we've been let down. Unfortunately I wasn't able to do this work myself as I don't live near them and couldn't visit in time.