The quoted text appears to be from Magna Carta (1215), Clause 13 (sometimes numbered 9 or 13 in different versions):
"Et civitas London habere omnes libertates suas antiquas et liberas consuetudines... volumus et concedimus quod omnes aliae civitates, burgi, ville, et portus habeant omnes libertates suas et liberas consuetudines."
"And the city of London shall have all its ancient liberties and free customs... We will and grant that all other cities, boroughs, towns, and ports shall have all their liberties and free customs."
London's City Corporation (unique medieval survival) still exercises ancient rights. Other UK cities have local government powers derived from this lineage — though reformed by 1835 Municipal Corporations Act and later legislation.
The clause enshrines a principle: urban communities possess collective rights against arbitrary authority — a cornerstone of Anglo-American constitutionalism.