It may well be that it only "requires" 54 or a "headline" of 55. BT tend to simplify things for us thicko public - as it is I am only getting around 45 so the difference between 54 and 55 was irrelevant to the call and I didn't want UHD that badly that I could be bothered to argue. I suspect that having a package of 55 running at it's top speed will be enough - in fact I suspect less than that would be fine as I can happily stream both Amazon and Netflix in 4K on my connection.

Speed test wise for advertising it lines up with the Virgin Media 50 Mbps service which can test at 55 Mbps if everything is perfect.

Live UHD - as rare as the winning lottery ticket with the quality settings BT Sport uses runs at a peak of 44 Mbps, still head shots probably less.

Pre-recorded UHD is usually in the 15 to 25 Mbps region.

All down to how its encoded and that getting football pitch grass to look good has been the bane of encoding software for a long time, hence to make it look good you use a higher bit rate

That would explain why BT refused me then - I actually didn't want the Sport but it was the most cost effective way listed on the BT site to get all the channels with HD.

They had entertainment plus at £10 which you have to add £3 for HD. Or you can get total entertainment at the moment for £13 which has more channels and a better box. But, because I don't get fast enough connection I am not allowed the better value package.