All visitors require a passport valid for the duration of their stay, visas are not required by EU or USA nationals for stays of up to 30 days. A return tickets is required to be shown before you will be granted entry. Any further visa or immigration related enquiries should contact the local Thai Embassy or Consulate. It is also worth noting that Thai officials reserve the right to refuse entry to those with long, untidy hair who look too “hippyish” or to people wearing clothes which are considered offensive to the state. Again further enquiries should be directed towards your local Thai Embassy or Conulate.
The Tourism Authority of Thailand provides general tourist and travel advice for visitors to the country:
Tourism Authority of Thailand 49 Albermarle Street London W1X 3FE Tel: (0171) 499 7679 fax: (0171) 629 5519.
All visa and immigration related enquiries should be directed towards the Royal Thai Embassy:
Royal Thai Embassy 29/30 Queens Gate London SW7 5JB Tel: (020) 7 589 2944 Fax: (020) 7 823 9695.
If you require UK representation whilst in Thailand you should contact the British Embassy:
British Embassy Wireless Road Bangkok Thailand 10330 Tel: + (66) (2) 253 0191-9 Fax: +(66) (2) 255 6051 firstname.lastname@example.org
There is also an Honorary British Consulate in Chiang Mai.