Query regarding BT rollout

With my exchange being part of the number listed for this next year, is it only BT broadband that I can get the better speeds from or will it significantly improve the current service I get from Sky?

Not from Sky (currently, anyway) - you'll have to take service with an ISP that is providing FTTC service. There is a list around somewhere (a search of this forum will turn it up)..

Note that it doesn't automatically speed up *anyone's* existing broadband - with BT, Plusnet, Zen, ADSL24, A+A (etc) you would need to order a new package or an upgrade, and new installation work is needed.

Right now, it doesn't work with almost any of the standard LLU offerings (like Be, Sky etc) - it requires a BT-based phone line as the base requirement (ie goes into BT's exchange, even if the service is bought via a 3rd party). However, Talk-Talk are doing something slightly different from everyone else - I'm not quite sure how their offering fits with LLU.

I have a list here of better known ones, and that page has a link to the orly/yarwell summary spreadsheet.