As Ignitionnet has mentioned.
Link to Openreach's page for sharing infrastructure:
https://www.openreach.co.uk/orpg/home/products/ducta...
Link to the Electronic Communications Code:
https://www.ofcom.org.uk/phones-telecoms-and-interne...
As I mentioned in the other thread, Virgin are currently employing 100mm micro trenching and ducting for their Project Lightning works in parts of Kent.
Your local highway authority will carry out inspections of Virgin Media's work and, where needed, raise any defects. Note that the utilities are only responsible for their reinstatement and you shouldn't expect any full width reinstatement of the pavement just because a small trench has gone through it.
Edited by deleted (Sat 11-Feb-17 01:04:54)