How many 90-day tourist visas can a UK citizen obtain for Thailand in a year?

A UK citizen can theoretically obtain multiple 90-day Tourist Visas (comprising 60 days plus a 30-day extension) in a year, with no official limit. However, applying for back-to-back visas at Thai consulates or embassies may lead to warnings or restrictions on future applications if done excessively. Typically, it’s suggested that only two tourist visas might be issued in a single year.