GreenGoth99 I am in a similar situation, although my route through is different. Once I was out of crisis I was able to articulate the extent of my history to my GP and the crisis team quite quickly and they are in the process of getting me referred to the specialist team who treat complex trauma in my area. It took my not being in crisis to be able to work with the GP and the crisis team and so on. This is why I refer to the crisis team as the not-in-a-crisis team. I did not find them as helpful when I was in a crisis, as I did when I was "only" aware that I was headed for another one, and got in touch with them sooner. At one stage I was referred to primary care MH services (IAPT) I was offered CBT and I turned the offer of CBT down after the assessment. Whilst some people find CBT helpful, I have had it in the past and I did not find it helpful then. I have never had DBT formally but I do find some of the techniques helpful, again, now that I am not in crisis. I have heard from someone else who was in the process of having more "proper" DBT, that they needed to not be in crisis, in order to be able to make use of it. Once I was out of crisis, I started to find it somewhat useful too. Whatever works, I guess.
I hope that PALS can help you. In terms of support in the mean time, are you able to keep posting here? I found that to be helpful. Depending where you are in the country, there are other options as well, to sort-of-tide-you-over in the mean time. I find the Samaritans helpful if I am direct with them, and am able to say: I am in recovery from complex trauma, and I am having a flashback at the moment. In my case, the trauma is complicated, involving multiple family members, so I feel able to call it complex trauma, even though this is not yet a diagnosis according to psychiatry. I do not have a diagnosis, at the moment, I have had them in the past though. I think I am "just" traumatised, at the moment.
If your username represents your age, then we are in the same ballpark.
Sending 
NHS resources are limited, so there could be a bottleneck and a waiting list for specialist psychotherapy. That is why I get creative, and find other routes through. I am somewhat glad I made it through the crisis, but sometimes I do wonder.
I do not mean to derail your thread, so, my apologies for the long reply. I am having a difficult time at the moment.