Reading my notes on BBC2’s new documentary strand Make Me Better, I find I wrote “Sheila goes in for a scam”. That was a mistake, of course. Sheila, who had cancer, actually went to Harley Street for a scan. The “scam” was in my own head, placed there by the pro-NHS zealots in my family. There was nothing so obvious as a criminal racket going on in Vanessa Engle’s eye-opening documentary. People were paying for a service, and other people were charging for it. Engle’s skill was in revealing what that service was, and how little it had to do with medicine as the rest of us experience it. This hour-long film (13 April), the first of three, had a huge range. Its cast included the manager of the £2.7-billion private estate which houses the medic