I tried doing more trace routes like you asked from last time I posted. Do these traces clearly show an issue?
Loading images, gifs, website content and trying to play anything online was a pain in the backside yesterday. Everything is currently fine, I tried the traces again and final hops seem fine. No PL.
From the tests it looks like latency to the UK is not ideal. It shouldn't be horrible though, around 200ms is still OK but we'd like to see it around 160-180ms ideally. The network guys will have a better idea of whether there is something specific of concern.