DIY Genetic testing for depression/anxiety?

Suffolk, UK

Does anyone know of a good resource for a bit of do it yourself with regards to genetic testing to establish which antidepressant/anxiolytics might work best in one's body? there's firm in the US called Genomind that offer a test called Genecept that offer such testing, but it seems very difficult to access this from the UK.

Therefore I'm wondering if there's a way to achieve the same by getting your raw genetic data (e.g. from 23andme) and then running it through some algorithm else where (self decode?).

Appreciate any insight you can give me.