How long does the eVisa application process take in London, and do they request all extra documents at once?

When applying for a Thailand eVisa from London, applicants can experience different scenarios regarding extra document requests. Some users reported that they were asked for additional documents after submitting their initial application, while others stated that all extra documents were requested in one go. Generally, the approval process can take 2-3 days after all required documents are submitted, although some applicants mentioned that the process could extend as the authorities may request additional documents multiple times.