He suggested that Alstom's contract be torn up, and that it was time to renegotiate the public-private agreements that delegate the running and maintenance of the Underground to two private companies, Metronet and Tube Lines (of whom Alstom is a sub-contractor).
Other improvements will include the running of new and some existing high voltage cables underground, particularly where they affect areas of outstanding natural beauty, and the construction of a new undersea link connecting Scotland with England and Wales.