@Wayne **************
single entry just says this. Doesn't state the length of bank statements or amount of funds
For Single Entry (stay up to 60 days)
A current passport with validity not less than 6 months and at least 2 blank pages. Applicants must fill in online visa application with their given name(s) and surname as appear in their passports.
Printout of visa application form submitted online, with bar code
Travel booking confirmation
Proof of accommodation in Thailand e.g. hotel booking, invitation letter from family or friend in Thailand
Financial evidence e.g. bank statements, proof of earnings, sponsorship letter
Confirmation of legal residence in the UK or Ireland (if applicants are not nationals of these countries) e.g. long stay visa, residence permit, BRP card