My new "super fast broadband" was connected today
. I'm now getting a download speed of 58Mbps and and upload speed of 19Mbps; quite an improvement (particularly on the upload side) over my previous 12Mbps download and 1Mbps upload!
The estimate was that I'd get a download speed of between 74 and 80Mbps, so it'll probably speed up a bit over the 10-day "training period", but I'm very happy indeed with it. Completely painless to set up.