Mersey Docks and Harbour Board Act, 1928
WHEREAS by the Mersey Docks and Harbour Act 1857 (being an Act for consolidating the docks at Liverpool and Birkenhead into one estate and for vesting the control and management of them in one public trust and for other purposes) the Mersey Docks and Harbour Board (hereinafter called "the Board") were incorporated for the purposes therein mentioned:

And whereas by the said Act of 1857 and subsequent Acts relating to the Board various powers have from time to time been conferred on the Board ...