Does anyone know if they are ever currently putting in additional cabinets that are not next to existing cabinets? (I.e. in order to provide service to those with long cable runs to the existing cabinet.)
This isn't a thing that they are doing within the commercial rollout, and haven't yet done so within the BDUK rollout.
However, one village is known to have subsidised an upgrade in their own area, where the two FTTC cabinets are to be located (or perhaps already have been) with the SCP (secondary connection point) rather than the normal PCP, in order to gain the extended range. Unfortunately, SCPs are rare in the network.
But there is at least news of new solutions appearing on the horizon, though we have no idea how the new solutions are to be used.
One presentation, from Openreach NGA manager to Lancashire county council, lists some things for coverage of the final 3%. See pages 11 and 12 of
this Lancashire presentation.
Another presentation, from a chief engineer in Openreach responsible for access-network strategy to NICC on their open forum day, The presentation is
here, on NICC's website. Page 9 has some solutions (FTTPoD, FTTdp, and wireless for rural access), while page 18 mentions some "BDUK infill" solutions, including "NGA Amplifiers", an "all in one FTTC cabinet" located deeper in the network than the standard PCP one, wireless cabinets, and more.
Who knows when, or even if, any of them will get deployed in reality. But it is good to know that solutions are being thought of - it means they are starting to think about the final 10%.