|01/06/1847||Hartlepool West Harbour and Railway|
Opens new dock. Traffic to [[Port Clarence] was to reduce causing friction between the Clarence Railway and the Stockton and Hartlepool Railway.
|30/06/1852||Stockton and Hartlepool Railway
Hartlepool West Harbour and Railway|
Merger authorised by Parliament along with lease or purchase of the Clarence Railway.
|17/05/1853||Stockton and Hartlepool Railway|
Hartlepool West Harbour and Railway
Merge to become the West Hartlepool Harbour and Railway Company