I found it a waste of time and money personally and I'd be interested to here others views.
I tried two therapists on the basis it may be a personality thing. I found one because she worked at a centre that was recommended. The other was via a general professional database searching for the therapy I was looking for in an area local to me acombined with wider internet searching of a short list for their websites and reviews and picked one.
The negatives I found were
it was massively time consuming. It's not just travel there but waiting for your session.
it was depressingas an environment and as an experience. Both of them worked out of rented rooms neither of which were nice. One was like a local authority library. The other was like a backroom above a shop. In winter they were dark and souless. In summer they were sweaty, unairconditioned and hot.
the one only did evening appointments and I also found that depressing because its a shit way to end a day. The process is often upsetting and I cried several times. It's really crappy to be in that situation and go home to an empty house.
It maybe that you have to keep going repeatedly for years to get anywhere but its so expensive combined with these other factors that I gave up. I didn't feel I was achieving anything.
The positives
the only positive things I could say about it are that on or one or two occassions (very few out of the sessions I attended) the therapist asked a question or said something that got me to think about my reaction in a way I hadn't thought about before. Before I went I had a high degree of self awareness of my own behaviour so it maybe others would have more of this experience.
One of the therapists did EMDR (Eye Movement Desensitization and Reprocessing) which was a therapy I had been looking for. It's really designed to deal with PTSD and trauma. That was very interesting. I can't say it helped enormously but it was a different experience.
For me, if I could have found somewhere really physically convenient (very close to home or work or on journey) in a nice environment with a nice comfortable room (I think this is important as it makes you feel worse to be in a cut price rented room or a sterile environment) that was cheaper I may have kept going.
I also deliberately chose therapists who were female as I've read too much about transferrence and did not want to risk getting attracted to or obsessed with a male therapist (I'm a straight woman).
Waste of time and money.