Tom - doesn't always depend on the parents - mine were supportive, I chose to ignore them and my HCPs for a few years as a teenager, doing about half the injections I should have, and not testing for months on end (I'd make up some figures to put in my test book before clinic appointments...).
Incidentally, I used to be treated at Mayday hospital where the prog was filmed. It has changed since I left, but I was told by the (previous) consultant that there was no funding for prescribing glargine, let alone insulin pumps and not to be so greedy in wanting them! That consultant has now retired, fortunately!
Also, the report of people not turning up for appointments there does match what I experienced. The clinics I attended there normally had a LOT of older people, mostly type 2, and generally I'd be the only type 1 there. If they've now split the clinics I'm not surprised hardly anyone turns up.