I've played one full online game so far & it was lag free, mind u the guy i was playing against was from scotland too which probably helped.
I had set up a couple of quick matches & got paired up with a couple of guys frome france or germany, somewhere like that & i lost the connection as they must have been too far away, i think if u stick to players from the UK then the connection should be fine & shouldn't suffer from any lag.
Looking forward to a game against u though mate.