ElfandSafety - I am wondering could it be possible that you have drug resistent depression, as I know that this can happen. I think firsttimemumtobe has a good point, have you ever discussed this with your GP or are you just hoping that this will happen, given that your depression has been so prolonged and serious. I agree to with what FTM2B says about psychiatrists, their main task is diagnosis and treatment and they don't always get it right, and yes if one AD doesn't suit or provide any relief, there are others that can be tried, but of course the trouble with that is you have to wait a month to see if they "kick in" or not.
If you haven't already I think you must request that your GP refers you to a conslt psych. Is your GP aware of how prolonged and serious your depression is and the way it is affecting you life, or are you someone who doesn't really tell it how it is. If not, you must do so!
I agree also that there is help within the community but I think this has to come after the diagnosis by conslt psych because CMHT people can't prescribe. Maybe you could ask your GP about referral to the CMHT and sometimes this is a CPN and sometimes a social worker with expertise in mental health. I had a CPN who was really helpful but I had been diagnosed and treated by a Conslt Psych at the time i was admitted to a psych ward. The CPN was part of my post discharge package.
I don't want to alarm you, but when I was in hospital last year, I was amazed to find that ECT is still used. I asked a DR onthe ward andhe said it was nothing like the old fashioned methods, where people shook and it all looked horrific. People now receive muscle relaxants and sedatives and can't remember the actual treatment. Their memory can be affected for a day or two. I saw many patients having ECT who seemed to be perfectly ok when they came back. In fact the ward manager told me that if she had drug resistant depression, she wouldn't hesitate to have ECT as it was the best method for these cases, though it is always used as a last resort.
I think you should talk to your GP about how bad things are for you and request that referral, which seems to be overdue.