> In the United Kingdom, it costs about £650 per patient to provide psychotherapy, which is effective for about 50% of patients. That figure indicates how much governments would need to spend, but does not take into account what they might get back.

they don't appear to provide a source for this. The English NHS collects, and publishes, a lot of data for the IAPT (Improved access to psychological therapies programme). IAPT provides access to short forms of therapy such as cognitive behaviour therapy (which would normally be about 7 weeks).

http://www.digital.nhs.uk/catalogue/PUB30153

> In August 2017 there were:

> 113,541 new referrals

> 83,330 referrals entered treatment

> 47,100 referrals finished a course of treatment, of which:

> 88.5 per cent waited less than 6 weeks and 98.9 per cent waited less than 18 weeks to enter treatment

> 43,922 started treatment at caseness, with 50.8 per cent moving to recovery

there's a large unweidly spreedsheet with results for each provider.

the latest figures are here: http://content.digital.nhs.uk/iaptmonthly