Short answer is practically ‘No’ , this can’t be done , a longer answer is that there was ( and maybe still is ) an overhead to underground ‘shift’ type order that was available when BT was an integrated business , running all aspects of the telecom business, before Ofcom required the creation of a network arm called Openreach and it to be and run at arms length from BT customer facing departments , but even if the order is still current and you can get an ISP to actually raise that order type with Openreach , you first need to get an overhead wire installed to actually shift underground, you can’t ask from the outset for underground in an overhead service area.
The shift underground order is in two parts , a survey (which you pay for , with no refund should you decide the whole scheme is too expensive ) the survey alone is around £300 (I believe ) and then depending on what’s required ( the amount of work needed ) to put the cable underground, is assessed and you also pay for that work , obviously without knowing the exact nature of what’s required it’s impossible to predict accurately , but several hundred ££’s isn’t fanciful so with the survey £500-£800 seems a reasonable minimum ballpark figure to work on , if you happen to live 60 metres from the pole and the ground to excavate was all carriageway then 5 or 10 times that figure ….so practically the answer is No , as once presented with the total costs no doubt you’re not likely to proceed and spending £300 just to find out the exact costs for most people would be too much like throwing money away.
