Tees & Hartlepool Port Authority
www.pdports.co.uk 
Founded in 1852 as the Tees Conservancy Commissioners, becoming the THPA in 1966. Acquired by Powell Duffryn, 3i and Humberside Holdings in 1992 with Powell Duffryn, later PD Ports becoming sole owner in 1995.
Ald. B.O. Davies
1955
Cleveland County
1973
Crofter
Greatham
2006
Heortnesse
1979
High Force
1986
John H. Amos
1931
Seal Sands
1973
Tees Harbour Launch
1986
Tees Sentinel
2008
Tees Soundsman