Left and above:
This pipe, with the figure of Britannia on one side, and a figure appearing to hold a document on the other, commemorates a Bill of Rights passed in 1820-30, repealing clauses of the Magna Carta.
The text on the bowl is:
KING AND CONSTITUTION
MAGNA CHARTA BILL OF RIGHTS
The text on the full stem is:
NEW ST, HORSLEY DOWN
(The maker's initials on left and right of spur are:
S / L - likely to be Samuel Lewis).
Horsley Down was a previous parish/sub-district on the south side of London Bridge in Southwark.