Piggy backing of connections in these circumstances should only be temporary. This is usually done when a blocked duct or service tee affects the new customer, & once the obstruction is removed the customer will get their own connection.
Will it affect your connection? If its done correctly, no. The signal levels at the cabinet should have been checked to make sure they are correct, but apart from that there should be nothing to worry about. VM HFC connections work on a shared radio infrastructure, so everyone on the cabinet is effectively sharing the same connection anyway. A large 50 port splitter/combiner in the cabinet distributes/sends the data & TV channels through a large diameter coaxial cable which may have come through several other cabinets between you and the fibre node.
VM BB TV Landline. Vonage 2nd line. Freeview/Freesat HD, ASDA/Tesco PAYG Mobile. Customer since 1993
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