The one I used agreed with the co-ordinates you posted - NR305AQ

NR305BF - No DSLAM there.

Yeah that was near the house, ohh well

17mbps will have to do ...

As I suggested earlier, you could double it with line-bonding. Then if FTTC does come along, you could keep a cheap ADSL2+ on the second line for backup.

Nope. Regulations are set by NICC. It used to be a subcommittee of Ofcom, but now seems to be separate.

NICC sets the ANFP that defines what can be connect to BT's wires (and a separate ANFP for KC's wires in Hull). At first it allowed up to 7.05MHz at the cabinet (but not the exchange), which allowed the 40Mbps variant to be deployed.

NICC changed the rules in 2011 that allowed 17MHz to be used in a cabinet, but again not in the exchange. That allows the 80Mbps variant.

Both of these had extra constraints on the transmission power, to avoid interference with exchange-based ADSL (and 2+).

NICC has a task on its worklist to look at exchange-based VDSL2 this year, but there haven't been any indications about what restrictions will be placed on it, such as the maximum frequency, or whether it can only be used for EO lines. They might even decide it still isn't possible.

In reply to a post by Apache14:

Yeah that was near the house, ohh well

17mbps will have to do ...

That postcode is served by cabinet 12, not straight to the exchange.

For my parent's line it says 15Mbps for ADSL2+ on the checker but in reality they are getting almost 21Mbps and that's on a 1.2km line.

In reply to a post by Apache14:

Yeah that was near the house, ohh well

17mbps will have to do ...

If it was estimated 17Mbps. You can always ask the ISP to target noise margin 3dB as it will boost your speed around 21Mbps maximum speed.