The point ref the trail btw was that the test centre I beleive was not that far from where these flats were, so not uber hard to impplement (or costly I imagine). What I was always puzzled at though, what was the aim of this trial? Sure wiring from NTL building to something close is not hard or too costly but on the grander scale of things - it would cost a bit if a arm and a leg.
I spoke to the guy who had it on IRC (#nthellworld) way back then and he said it was def 155mbit. not that it matters if it was 10mbit or 155mbit - they are both fast....
I remember when he got told he was going back to normal cable, he was a tad bit annoyed to say the least