My new neighbour (100 yards away) in a new log cabin in Lincolnshire (not Outer Hebrides) ordered a new phone and is still waiting. In one of her chase-up calls, she was told that it was going to cost over £3000 requiring x meters of cable and etc. etc. etc. Not the expected £124.99.
Anyone have any ideas?

Yes, there's a point when the £125 covers most circumstances even when it's likely to cost a £1000 - £2000 ends, and you have to pay the real cost of having a line in and not the subsidised cost.

Your neighbour maybe only 100 metres away but it could be there isn't enough lines to add the extra one at little charge and a lot more work is required.

I can understand that sometimes it might cost a lot more than the advertised charge to connect a new phone but isn't that offset by reconnecting existing lines which have been out of use for more than the stipulated 3 months, when they still charge the full installation fee? (Or maybe I read that wrong) In any case, unless I've just not found it, I haven't seen anywhere about charging more than £124.99.

the developers obviously did not inform bt new sites, so what happens now will be if it goes ahead survey officers go on site they pass there information onto new build who put the underground duct or poles in to feed said property, planners then get involved to plan route from local exchange,local engineers may then be used to carry out pair diverts from the main cable from other dp,s to feed the property , also carry out the installation, frames engineers in exchange carry out their tasks.so youre looking at ,at least 4 different depts,possibly 10 men in total including contracters to carry out any ducting ,cable ducting/poles ,right to dig watleafs etc .£3000 will not even touch the true price.

Thanks. That's quite elucidating. So, if you buy a new property you need to check that the developers have sorted out a detail like that. It would have been nice if they'd said! But if this neighbour pays that amount (highly unlikely) then new properties around would benefit and not need to pay this development fee? Sounds rather unfair.

all big and most small developers will get new build involved early on in the process and usually new build will look at the plans add what is required onto it supply the under ground ducting and the devlopers then put the ducting in as well as prewire the internal wiring in said properties very rarley now do enineers go to a new development to install lines as they are usually pre-connected in the development process and only requires the frames eng in the exchange to run a couples of wires on the frame.