Well not any more:
http://www.telecompaper.com/news/vir...unions--907443
Looks like VM are easing out the CWU.
To be honest Virgin Media has only ever really paid lip service to the unions, there isn't a great membership amongst VM employees.
When we had the Broadcast division there was a decent membership of BECTU amongst them, but there aren't very many people I know in the CWU.