If he's working ethically his supervision will be with someone outside of the NHS, who has no management responsibility for him. Most therapists pay someone privately for clinical supervision and their employer reimburses the cost - it's not supervision in the way you might understand it in a job in that it's not the supervisors job to tell the therapist how to work with the client, they are there to make sure the therapist stays healthy in their work, to help avoid them burning out and to help them practice ethically by not taking their own issues into your therapy.He probably doesn't get enough supervision and his supervisor if he can get hold of her (NHS cuts under this present government, - don't get me going on a rant here) she often is very strict and tight and probably disapproves of most that he does with me. I
I do think @joeylittle has given you a really good model for getting back on track, by trying to work with the schedule and not getting caught up in how hard it might be for your therapist. And, if you need to get angry or upset then do that - if it's too much for your therapist he needs to deal with that and as an adult professional he can and should be able to take care of himself in whatever way he needs.
In terms of finding a new therapist, if you're in a position to go privately it would be worth thinking about.