Victoria Coach Station
Victoria Coach Station in London's Buckingham Palace Road, is the hub of the National Express network of long-distance coach services across the UK and Europe. Managed by Transport for London, it is situated just across the road from Green Line's own Bulleid Way coach terminus at Victoria and the main coach stops in Buckingham Palace Road.
It is therefore easy to connect between Green Line coach services and the National Express network.
For more details see the Victoria Coach Station website.