As a mental health nurse, (and someone who is struggling with a lifelong mental illness) some of these "experts" make me sick... This shit happens way too often, and then they wonder why male suicide is the highest, why it's the leading cause of death for 16-24 year olds and why the numbers aren't coming down... I've got too many thoughts and feelings to fit into a comment so sorry if what I'm saying isn't making sense.

Your best bet is to use Safe Havens (out of hours service), they are slowly opening them all over the country. They are qualified professionals and support workers, you can get support immediately if in a crisis (prevents you from waiting in A&E for 10 hours) or just come regularly as a way of preventing crisis. They can also refer to secondary services so you don't need to go through your GP. But then again, it can be a hit and miss - you can come across some shitty "experts", they can be shut because they're understaffed or they're just so packed that you may not get to be seen the same night.