I've found a bit more out about the issues around the obtaining of medical certificates- clearly there are issues if you want to drive and have epilepsy, T1 diabetes, have had black outs etc. To get a medical certificate to be a taxi driver, you have to get one of these completed by your own GP who will have your records. However, I have found at least two online sires/ forums aimed at would be Uber drivers that give advice on how to get a doctor who doesn't know you to sign one of these certificates. I've no idea of course about how widespread all this is but it's scarey I think that this information is so easily available if you search for it. Why on earth are there apparently no checks on who exactly has signed the form and whether that doctor has access to your medical records? This applies across the board and not just Uber drivers, it's just that I was searching under Uber. It makes you think about DBS checks as well, especially if you haven't lived here all that long.