i got 80mb upload and download with 1 server around my area when trying speedtest.net and then i got 2mb/s download and upload with another server
i am not sure it's completely accurate in the UK, i may be wrong tho
my ISP guarantees me to get a 70mb/s upload and download speed though, even though that never is used to that extent because wireless connections and the server i'm getting a file off might have a limit