What was the experience of applying for a visa through the UK embassy in London, and what tips can be shared for a successful application?

DTV approved — London.

Applied through London as a dual national and accidentally put my nationality as American on the first application. Cancelled, fee gone. Fair enough, my mistake.

Reapplied with British to match my passport. One day later they asked for extra documents, sent them same day, approved the day after. Two days total.

If you have a legit business and your documents back it up, you'll be fine. The horror stories in here had me stressing for nothing.

Get your paperwork consistent, answer what they ask, respond fast. That's it.