Greyhound bus services will run from London to cities such as Portsmouth and Southampton . Greyhound continues to run services from London to Portsmouth and Southampton . Buses are glitzier and more luxurious than U.S. services . London Lines is owned by British transport giant FirstGroup .
Greyhound continues to run services from London to Portsmouth and Southampton . Buses are glitzier and more luxurious than U.S. services . London Lines is owned by British transport giant FirstGroup .