

Thanks for the input. I do a lot of remote work over a VPN for work (Azure one I assume as they’re an MS house, I’ve not checked), which they don’t block, but they also only blocked the always on VPNs myself and the rest of the household had in place for that 12 hour window on a Sunday. It is currently working fine for the personal VPNs. I didn’t think to test the work laptop given I’d tested 3 VPNs by that time, but I’ll try next time
Nah we don’t know that either way on the available facts.
I had one outage which started on a Sunday and ran about 10-12hrs, 3 commercial VPNs were throttled down to 250Kb, but if you turned off the VPN or split tunneled full expected speed was reached (100Mb +). It wasn’t the VPN servers as disconnecting from wifi and going over 4G/5G worked normally.
The “outage” ended and hasn’t happened again. On the monday at least 2 of the commerical VPNs plus my work VPN were all working fine at the expected speeds and have been since. So we don’t know either way whether my work VPN was or was not affected as I didn’t think to test it.
Hypothesis 1 - I was sinbinned for too much torrent d/loading on sat night with a lock down against the VPN addresses that would have come up as the top couple of sources of large data requests (because obviously the tunnel IP address is what the ISP sees)
Hypothesis 2 - they trialled blocking popular 3rd party VPN services as you suggest (but 1 of the 3 is very obscure and def not main stream) and I was just one of those caught in it
Hypothesis 3 - Packet inspection captured torrenting activity and throttling was done because of that.
Clearly 3 is the worst scenario, 1 & 2 are quite probable - the govt is currently trying to create legislation to control VPN usage and as the largest(?) ISP Virgin would be an obvious candidate to do some tests on, and their service is so shite their customers are used to it getting shitty for random reasons.