I'm not talking about letters and notes (some GPs's charge for letters for ATOS medicals and the like), but that my practice's manager runs a private health business from our surgery and, iirc, some of the GP's themselves, the more senior members, work in that business. I haven't raised this with any of them and I'm not sure how I would since they aren't going to take kindly to it I imagine since they obviously see nothing wrong with it.
I would imagine that if they have time for that, they have time for patients and getting an appointment is already a pain in the arse, as it is for everyone these days. To see one of these doctors will likely have you waiting, when the day comes around, for upwards of 90 minutes just to be seen. The whole thing is a mess.