You can get tested and/or treated for chlamydia in all sorts of places - you can:
Venues include young people's clinics, clubs, colleges, community contraception clinics, GP surgeries, genitourinary medicine (GUM) and Sexual and Reproductive Health clinics (STI/STD Clinics), pharmacies and schools.
When you are tested for chlamydia you will be tested for gonorrhoea at the same time.
If you have been contacted by text message (email / letter, etc) and told that you have chlamydia and need to get treated, just type your postcode in the 'need to get treated' box above. You will be taken to a list of places that offer free chlamydia treatment.