My DTV just got approved London Embassy. Took 7 days. Workcation route I'm a self employed full-time youtuber. They asked for a portfolio (provided youtube channel screenshots of analytics etc). A coverletter. Most recent bank statement. Passport photo. Most recent tax return. Passport info. Proof of address (used water utility bill). Flight number (just the number) and accomation details for Thailand (hotel). Very easy, very quick.