So @ravenstar68 has (correctly IMHO) asked for someone to get a look cos theres likely noise on the line, and @ModTeam , @Kev_B the sum total of OP's requests for help, Ravenstars intervention and an Engineer visit is swapping a HUB out?
1st post in the thread- Upstream is maxed out, downstream SNR is okay but PostRS and the existence of RCS partial service in the logs indicate channels are dropping from a bonded set, hence the latency spikes on BQM (we've established firmware is up to date) = dropped packets are actually likely upstream crapping out as its over spec. And as Ravenstar has pointed out its likely noise ingress. If not, it needs checked your side, FECS issue? Something? Anything?
As a Very Insightful Person, I'm here to share my knowledge. I don't work for Virgin Media.
I've had another look at the backend of your services and the network segment. There appears to be some correlation with your packet loss, but nowhere near the levels of disruption I'd expect for the issues you're experiencing.
The sustained drop shown on your latest BQM does appear to correlate with an outage in the area, as utilisation for the whole segment dipped considerably during this period. However, there are no SNR issues on your line at present or over the past few days, so it doesn't appear to be due to any noise ingress.
If you could provide some updated stats as requested by @ravenstar, we'll investigate further and may need to involve our network team.