Historical Dictionary of London

SANDY'S ROW

South out of Artillery Lane, at No.32, to Middlesex Street. The western side in Bishopsgate Ward Without, the eastern side outside the City boundary (P.O. Directory).
This street formed the northern continuation of Middlesex Street, and in the middle of the 19th century extended further south into Portsoken Ward as far as Harrow Alley.
First mention:Horwood, 1799.
Called " Petticoat Lane" in the earlier maps.
The portion 500 ft. long adjoining Middlesex Street was widened to 40 ft. in 1889-96 (Lond. St. Imp. 1855-97, p.199).
It was probably named after the owner or rebuilder.