RuralBB is the company, they have a setup in Stone in South Glos running at those speeds.
However their website now only shows 100/100. I do have e-mails from him saying they were doing 20/50/100 and could do 500 and even 1Gbps on demand.
Edit - at the bottom of the webpage it does say "*Prices for the 500Mb service on request."
Blimey I never heard of this company can do 100/500 or even 1Gbps but it was very naughty of them metion there is no up to speed are misleading.
Edited by adslmax (Tue 08-Aug-17 13:08:28)