I have used BudgetAir.co.uk twice and have had no problems!
I have seen some of the negative reviews and was a bit sceptical. However, they had the best fare for my trip, so I booked them. I had no problems at all and received my confirmation and e-ticket straight away. I was also emailed with schedule change information closer to my travle date. I flew on Virgin to Florida and then I booked a second trip to New York. I was able to use my £15 discount voucher off this next trip. Don't knock them, I have had 2 positive experiences. Thank-you BugetAir.