Some possible options to consider based on personal experience (though as others have pointed out, not necessarily available in all areas of the UK)

1. Secondary care services - CBT & Psychodynamic therapy. I'm guessing your friend only received a basic level of CBT limited to several weeks or months. Longer term and higher intensity CBT may be a possibility if they get a referral through a doctor, psychiatrist or other mental health worker to secondary care services. The same is true for Psychodynamic counselling.

2. You're friend may be able to be allocated a CPN (community psychiatric nurse) from their local CMHT (community mental health team), again by referral from doctor.

3. Their GP may also be able to refer them to a mental health facilitator. I used to see one in my local surgery.

4. They could find out about getting a support worker, as others have said.

5. There are affordable counselling services, at least where I live, where you can access counselling at a lesser rate on a longer term basis.

6. The BACP website has a directory of counsellors who offer private therapy and you can search for one in your area.

Hope that's of some help.