The sleep apnea story with George is annoying me! They literally had him making an appointment with his GP, seeing them, I presume, the same day, and getting a CPAP machine there and then!
I have obstructive sleep apnea like George, and I was diagnosed by our local hospital (after having to wear an oximeter for 2 nights), and then referred to the nearest nhs sleep clinic for a CPAP machine which took about 3 months for the appointment to come through. You have to have be shown how to use, and clean the machine - they're expensive bits of kit.
Legally, you have to inform the DVLA that you've been diagnosed, and your driving licence is revoked until the hospital confirms to DVLA that you have been using the CPAP for a minimum of 4 consecutive hours per night (you're monitored remotely for ever).
I don't expect the writers to do the story in real time, but I do think it'll come as a bit of a shock to anyone who goes to their GP expecting it to be dealt with there and then to discover it's more complicated and takes bloody ages.