Nothing at the mo :(
Im happy with my virin tbh.. quoted 10mb.. and always get 10mb
but the up to 24mb line speed is dependant on the line/distance to exchange etc.. so you can't moan about that.
also, if you go over the 40mb cap, then dont be a cheapskate and get unlimited!
They are currently 'fibre-opticing' my area as I speak (switch on is 31st December), how does it work if you're a reasonable distance from a road though? From the looks of things they are just channelling it along the main pavements, so how does it get those last 50m+ or so to your actual house?