Hmm. Good-ish.
http://www.camieabz.co.uk/broadband (scroll down to line stats)
I'm approximately 2.2km from exchange, and approx 600-700 meters from cab. Best ever connection was 16000 sync and 14000 profile, and 13.5Meg speeds, but that was prior to ADSL2+ really penetrating the market. More typical speeds have fluctuated between 9.5 meg and 12 Meg, depending on what I believe are takeup levels of FTTC on the exchange. Pings tend to be 20-25ms, and
fast path is always demanded.

Estimates for FTTC are:
Products DL(Mbps) UL(Mbps) Hbck Thresh(Mbps)
High Low High Low
VDSL Range A (Clean) 64.1 44.0 15.8 10.0 38.7
VDSL Range B (Impacted) 61.4 38.7 15.5 8.9 31.7
FTTPoD 330 30
I just keep putting off changing product, as 11.5 Meg isn't too bad for my needs most of the time, and I have other things on my current contract to consider. The occasional large game update is a bit of a PITA though. I guess my real world FTTC speeds would be 55 Meg-ish / 12 Meg-ish. No G-Fast option for me, even if the exchange had it available, and FTTPoD would be a bit expensive, as I'm the furthest house from the cab in the street.
I'd happily settle for 20/5 if there was such a product available from current ISP.