Hey, Beanie, first ... <big brotherly hugs> to you if that's OK. I've been depressed and on meds for it in the past, and it was a tough road uphill, but I made it. I just wanted to let you know that it's possible, even though sometimes it feels like it's not.
I'm no expert, but there were times I couldn't cry when I was depressed. God, that was painful, and I don't know how things work in Wales, but over here in the states, my regular doc ran me through a number of anti-depressants until I went to see a psychiatrist who specialized in meds, and he knew right away what to put me on. So not every doctor knows what it takes when it comes to meds for depression. Feel free to hit me back or PM me if you want to talk more about it.
--Kris