Thought I'd give my two cents on the matter.
My exchange (Northolt) has been on the rollout list since June 2010, next to one of the pilot projects in Greenford (a few mins away). I used to work in Greenford, and I was extremely impressed by the pace at which fleets of BT Openreach vans/trucks would swarm in to an area and install new cabinets. It completely changed my view of BT engineers (the stereotypical tea sipping dossers).
I have been desperate for a faster connection for the past 8 years living on a new street that wasn't cabled by Virgin, and as a result I can only get 6Mb maximum on ADSL2+. I was elated by the news that my exchange would go live in June of 2010, amidst the first few exchanges in the country, but I later discovered a BT PDF that detailed new enablement dates for my exchange. June became September.. September became December. December became March, then became June, then July 1st, and now my exchange has been delayed until December 2011. An overall delay of 18 months
This is extremely disappointing. I have watched all the surrounding exchanges being enabled, with fancy new cabinets popping up on literally every street corner for miles around. I wouldn't feel so negative about the whole situation if i actually saw the fleets of BT trucks rolling in to my town, and whipping those new cabinets in to place, but it just hasn't happened. And I'm skeptical as to whether it will happen this year. The rollout is really testing my patience to the limit, but I have seen first hand the speed at which BT can install cabinets. So somewhere deep down, I'm still a little optimistic. BT just need to get their skates on