Inspired by the previous retention deal, I called Sky about 10 minutes ago citing the offer here for £10 per month, and they matched it. I then asked for fibre, and they said they could do me it for £10 a month too, with £50 activation fee, and then I just fumbled around deciding whether or not to spend the extra £50 for speed I don't really need. I asked for some credit, and the lady popped £20 credit it. I'm sure the savvier of you lot may get even more credit.
The fibre speed is a bit over double the normal broadband speed of 17mb to 39-40mb.
Again, this is mainly so you can use this as leverage when renewing your broadband so you don't get screwed over! Hope it helps!
To note: There is NO line rental for this, so it is a flat £10 a month for 40mbit broadband.