I had 200mbps from virgin but it was shite and decided to leave, they then gave me a great deal on 100mbps and its even more shit ... so thinking of making the jump.
Nah, they're their own company, just in London atm, you have to check their website for coverage. They run the fibre overground using BT poles so they've been able to roll out reasonably quickly. Been waiting for my BT contract to run out to make the jump.
Just had community fibre installed, oh the sweet, sweet goodness.