Berwick-upon-Tweed was given a grant of murage dated 8/5/1410.
This was in the form of:-
Wording
Grant for three years, for the removal of certain differences and ambiguities which have arisen concerning the payment of custom and in consideration of the burning and destruction of the town of Berwick on Tweed and the losses which it has suffered, that the burgesses and merchants resident in the town may buy wools, hides and wool-fells of the growth of between the rivers of Coket and Tweed and of Tevidale and Scotland and take the same to the port of the town and ship them to foreign parts after payment to the king of 13s. 4d. for each sack of wool or last of hides and every 240 wool-fells. By K. and by pet. in Parl.
Granted by Henry IV. (Regnal year 11). Granted at Westminster. Granted by K. & pet. in Parl..
Details of the petition which resulted in this grant can be seen
at this link. 
Primary Sources
Maxwell Lyte, H.C. (ed), 1909,
Calendar of Patent Rolls Henry IV (1408-13) Vol. 4 p. 194
online copy
Record created by Philip Davis. This record created 24/02/2009. Last updated on 03/05/2012. First published online 5/01/2013.
