The Stockton & Darlington Railway and North Eastern Railway merged on 13 July 1863, although it was a condition that the area was managed by a committee based in Darlington for 10 years.
The Stockton & Darlington Railway and North Eastern Railway merged on 13 July 1863. The S&DR transferred route miles of line and about 160 locomotives, although there was a clause in the Act that the area was managed by a committee based in Darlington for 10 years.