After 1948 the majority of the United Kingdom railway network was nationalized as British Rail for both political and practical reasons. Internal industrial operations and some minor lines were excluded from the process. Where industrial lines met the railway network proper trains would be transferred from the industrial operator to British Rail control with non-British Rail locomotives and engineers never being permitted onto the British Rail network. Arrangements existed whereby non-British Rail operators could own rolling stock. This changed in 1986 when, in a very different political climate Foster Yeoman were able to obtain the right to run their own trains onto the British Rail network providing British Rail locomotive engineers were used.