What should I do if my UK passport was stolen in Thailand, and how much will it cost to replace it?

If your UK passport is stolen in Thailand and recovered damaged, first contact the VFS Global office in Bangkok, which handles passport replacements for the UK government. You should submit your police report along with your application for a new passport. The cost for a replacement is around £118, and it can take up to three weeks to receive the new passport. Additionally, you may apply for a temporary passport or emergency travel document through the British Embassy, but typically, the full replacement process is managed by VFS.