From 1949 until 1967 BET continued to be one of the two major bus groups in the UK, alongside the state-owned Tilling Group (owned by the British Transport Commission and from 1963 by the Transport Holding Company).
The British Transport Commission (and later the Transport Holding Company) held minority interests in many of BET's UK bus subsidiaries, and in late 1967 BET sold its UK bus interests to the Transport Holding Company, to become part of the National Bus Company.