Thailand to United Kingdom visa requirements

Thai ordinary passport holders need a UK Standard Visitor visa before travel. The 6-month visitor visa fee is GBP 135; ETA is not available for this route. Thai ordinary passport holders generally need a UK Standard Visitor visa before travelling to the United Kingdom for tourism, visiting family or friends, short business activities, short study, permitted paid engagements, medical visits, or other Standard Visitor activities. The GOV.UK check-uk-visa result for Thailand and tourism says to apply for a Standard Visitor visa, so the UK ETA route does not apply to this traveller type. A Standard Visitor visa costs GBP 135 for up to 6 months from 8 April 2026; long-term 2-year, 5-year, and 10-year visitor visas cost GBP 506, GBP 903, and GBP 1,128, but each visit is still limited to 6 months. GOV.UK lists the current outside-UK processing time for Standard Visitor applications as 3 weeks. The passport or travel document must be valid for the whole UK stay. For transit, Thai nationals normally do not need a visa for direct airside transit that stays outside UK border control, but need a Visitor in Transit visa if passing through UK border control for up to 48 hours unless a transit-without-visa exemption applies; use a Standard Visitor visa if staying more than 48 hours or visiting the UK.