Step 1: Apply on GOV. I made a STEP BY STEP guide on how to apply for a UK tourist visa with letter templates provided!If you need a Standard Visitor visa, you must apply online before you travel to the UK and attend an appointment at a visa application centre. For Priority Visa applicants, the process takes 3–5 days, while for Super Priority Visa applicants, this speeds up to a single business day. When making an online UK visa application, you will need to visit the GOV. UK website and select the correct visa type. Click here to go to the Immigrant Visa application portal (CEAC).