There are two reasons you should not modify Virgin's cabling:
1) The white cable is specialised triple screened cable that is designed to keep out confilcting signals used by broadcast TV/Radio & mobile phones.
2) Altering the cable length unbalances the signal levels, which may require opening the street cabinet to make the required adjustments.
Virgin charges a non fault callout fee of £25 to make any changes to cabling.
VM BB TV Landline. Vonage 2nd line. Freeview/Freesat HD, ASDA/Tesco PAYG Mobile. Customer since 1993
I'm a Very Insightful Person, I'm here to share knowledge, I don't work for Virgin Media. Learn more
Have I helped? Click Mark as Helpful Answer or use Kudos to say thanks