Virgin cable in my garden

ringing will get you nowhere as they wont understand what you mean - wait here for VM who may? be able to help - they will try but its in the hands of the gods as to much happening - its not unusual for whoever its sent to to ignore you in the hope you go away

its unusual for a cable like this to feed more than one address - its worth checking where it goes to - if its an old cable to your property and you are the only [non] connection then remove it - no danger in that - cut it back to where it comes out of the pavement 

if it is feeding other properties then it should not be on your wall in the first place unless there is a wayleave in place - if you gave that then you need to work with VM but if they just installed it there sometime in the past without permission which they often do then its really up to you - you can wait for them but you need to drive things as VM wont so give them a time frame - if nothing happens then remove it - if it cuts off other users then VM will have to sort that

If the wall top VM cable does feed the folks next door, let them know when the wall is going to be taken down and they should contact VM soon to arrange a cable re-pull across their land so as to avoid loss of service.

Explain as your not a VM customer you can't request VM perform cable work.

Thank you both.  @virginmedia perhaps you can advise also. 

I think this might be more difficult to resolve than it possibly should be. Firstly, as you say you are not a VM customer and hence they simply won’t talk to you. As Client62 states above, it would be advisable to talk to your neighbours (the VM customers) and get them to arrange for a cable re-pull, this will incur a charge of £25 and as an expression of good will, you might want to offer to reimburse them; your decision!

When the wall is demolished, is it possible that the cable can simply be dropped onto your neighbour’s property without cutting it? That way at least they don’t lose connectivity and having the cable re-buried is down to them.

As stated, as VM won’t talk to you, alas the onus is on your neighbours to get this resolved. Now as -tony- hinted at above, is there any sort of legal wayleave or easement agreement in place (if there is, then it should be on your house deeds) to give VM permission to use your property for their cable. If there isn’t (there probably isn’t) then you are within your rights to simply remove it. But if it were to all go hideously wrong, then Courts love the idea of you behaving ‘reasonably’, you have alerted your neighbour, offered to recompense them for VM’s fee, instructed your builders to take precautions to not cut the cable but carefully relocate it onto your neighbours property. There’s not much more you can do.