Historical Dictionary of London

WALLNUT TREE ALLEY

East out of Bishopsgate, in Bishopsgate Ward Without (Hatton, 1708-Lond. Guide, 1758).
Former name: "Walnut Tree Yard" (O. and M. 1677). "Walnutt Tree Court" (Strype).
A Fire Brigade Station occupies the site (P.O. Directory).\Possibly named from a walnut tree there, or from the sign.