I'm updating this in case anyone else has similar issues in future. I've been told to come off my anti-depressant SNRI and the Tegretol that I take for nerve damage (non-diabetic related). I'm tapering these down slowly and have also doubled the dosages of my blood pressure meds.
Christmas will be painful without the Tegretol and I'm really hoping that stopping the anti-depressant doesn't cause a relapse of those symptoms. Work have been totally **** about everything, they seem to think I'm doing this on purpose just to be a nuisance. Stupid people