I made a shortlist. I knew I could afford up to £50 a session, didn't want someone in my area and was willing to travel up to an hour. So I went to counselling directory and filtered. Then I filtered the remaining results by qualifications, specialty and experience and scanned photos. I decided I wanted to work with a man as there is sexual trauma involved and I knew working with a safe male would be beneficial but I didn't want anyone who reminded me of the abuser.
I shortlisted 5 and called them. None answered so I left messages and only one called back. I went to meet him, liked him and I'm working hard.
I know choosing from photos sounds silly but it does give you an idea of their vibe, whether you will feel comfortable with them.
My therapist reminded me visually of a driving instructor I had. God knows why, they look nothing alike. Driving instructor was stocky, loud and very confident and always willing to jump out and give out to other drivers who beeped at his learners.
Therapist is small, slightly built, softly spoken, quiet and reserved to the point of shyness. As non threatening as its possible to be. Although once I got to know him, the reserved blank exterior has given way to a warm demeanour and wicked sense of humour. I think you just need to shortlist, make a few appointments and meet them. You don't know who she'll click with until she meets them.
If you're in the vicinity of North London, happy to recommend.