Presumably the placing of speed testers at Virgin network sites is a good idea as this allows users to test the Virgin network aspects of speed and thus see if there is anything wrong with that; overloading of local network for example. Admittedly it excludes testing of interconnects and transit within the the wider internet, which may occasionally be an issue, but speedtest users can select a test site further away to include this. With regard to fiddling tests, I can't see how this could be done and I too have noticed that Virgin seem to overprovision speeds a little these days. (Unlike DSL Virgin speeds are set in the network equipment and are not determined by distance from exchange/headend). To make certain, download a big file, remembering to multiply file size in MBytes by 8,388,608 (1024 x 1024 8 bit bytes per Megabyte) by seconds to download to get the bitrate.
Edited by glasspath (Tue 08-Aug-17 18:42:49)