This is the entirety of the 1843 London Post office directory, as it is added.
ZACA TECAS Mining Co. (A. Godfrey, sec.). 5 Broad street buildings
Zaleski Falkenhagen P. commission agent, 147 Leadenhall street
Zeal John, accountant, 7 King square, Goswell road
Zeederberg Brothers, merchants, 9 George yard, Lombard street
Zeitter & Co. manufacturers of all kinds of horizontal & upright pianofortes, by
royal letters patent, 4 & 5 New Cavendish street, Portland place
Zetterquist Chas. & Sons, oil & colormen , 60 Blackfriars road
Zicaliotti Constantine, merchant see Cheriaco & Zicaliotti
Ziegler Henry Brian, artist, 38 Gerrard street, Soho
Zimmerman Godfrey, curiosity dealer, 48 Albany street, Regent's park
Zimmerman John Frederick, wholesale toymaker, 70 Shoreditch High street
Zohrab Edward, Ottoman consul general, 1 Bryanston square
Zonzius & Boothoid, tortoiseshell & horn comb makers, 35 Nottingham place,
Whitechapel
Zoological Society's Office (William Ogilby, sec.) 57 Pall mall
Zorulin J.J. & J.J. exchange & bill brokers, 23 Threadneedle street
Zox Lamen, aquatic life cap manufacturer, 46 Drury lane
Zox Myer, cloth capmaker, 119 Drury lane, Holborn
Zuccani Ernest & Co. looking glass maker, 37 Skinner street, Bishopsgate
Zuliani James, foreign commission agent, 60 Commercial sale rooms
Zulueta & Co. merchants, 22 Moorgate street, City