London was given a grant of murage dated 28/9/1326.
This was in the form of:-
Wording 
Grant to the mayor, sheriffs and others of the city of London of murage for three years, to be taken by the hands of Hamo de Chiggewell, the mayor, and his deputies; on condition that goods passing over or under London Bridge, on which pontage is taken, pay nothing by reason of this custom. By K.
Granted by Edward II. (Regnal year 20). Granted at Tower of London. Granted by K..
Primary Sources 
Maxwell Lyte, H.C. (ed), 1904, 
Calendar of Patent Rolls Edward II (1324-27) Vol. 5 p. 322 
online copy
Secondary Sources 
Coulson, Charles, 2009, Murage Grants (Handwritten list and notes)
     
Record created by Philip Davis. This record created 14/01/2009. Last updated on 03/05/2012. First published online 5/01/2013.