UK clinics will tell you to wait 2 weeks before you get tested. Most likely they will take a swab from inside your penis and look under a microscope for white blood cells, inflammation of the urethra. They will then send your urine for testing for Gonnorhea and Chlamydia
For extra peace of mind Google confidante Sti test by Randox labs. They will also tell you 2 weeks, however, most people on here would say that's a little long as it is a PCR test therefore is looking for DNA
Hi also, if you had vaginal sex outside your marriage and the condom broke you would need to test for all STD,s for her protection before being intimate with her. Test for the below at the correct window period: This is for her protection.
Gono, chlanydia and nsu-- 7 days
HIV-- 28 days with the duo test
Herpes-- 3 months
Syphilis--6 weeks