I wanted to get a visa sorted for a trip to India, but didn't want to have to travel to a centre to deliver or collect, or risk the questionable waiting times, so used Rapid-Visas, on the recommendation of a friend. I paid for the 5 day service and my passport and visa were back with me within the expected timescale, without a problem. I also phoned them a couple of times to check things before sending in the forms, and they advised me what to do over some potentially confusing aspects. While I could have done it more cheaply myself, this gave me the confidence that it would be sorted promptly and saved me at least one, if not two trips into London. Definitely worth it and I would use them again.