Same here I went from 152meg to 200meg and speed is all over the place... I did post on the VM trial forums but haven't replied back to that one yet.
I have been testing this speed over wifi not tried wired yet but will be doing that tomorrow. as a rule when I was on the Hub1 I used my own router RT-N56U and used to pretty much max out the BB speed most days with the odd days like weekends and school holidays been a little slower not usually dropping past 100meg
I've moved to 200 meg using the Hub 3 and speeds are all over I tested a few night ago at around 00:30 and speeds were around 167meg I then tested the night after at around 2am and speeds reached about 180meg.
over the next couple of days inc today I have tested on a number of occasions around morning into the evening time and getting speeds anywhere from 55meg to 140meg
I'm posting this post at 1:27am and just done speed test on Manchester (VM) and Leicester (VM) and speeds are around 75meg
I've also noticed when gaming world of warships before the 200meg upgrade I was getting 35ms on the server now I get 35ms with lag spikes all over the place jumping to 200ms then 60ms then 125ms with some rubber banding going on