Download the forms from the Hull website>>>
The Royal Thai Consulate of Hull
Send by registered post and include a return registered envelope. Last year when I sent for a Non Imm 0 got my passport back the day after posting it! They are very efficient and helpful there. Found the Birmingham consul to be good too.
Prices as of July 2nd>>>
Tourist Visa with single entry = £28.00
Tourist Visa with double entry = £56.00
Tourist Visa with triple entry = £84.00
Non-Immigrant Visa with single entry = £45.00
Non-Immigrant Visa with multiple entries = £100.00