This is the entirety of the 1843 London Post office directory, as it is added.
Newton & Appleton, auctioneers & estate agents, 7 Mansion house
Newton Benjamin & John, notaries, 10 Birchin lane, Cornhill
Newton & Co. country newspaper office, 2 Warwick square
Newton & Cook, brushmakers, 63 Princes street, Leicester square
Newton, Gordon, Cossart & Co. of Madeira, 6 New Broad street
Newton James & Thomas, snuff & cigar manufacturers, 37 & 38 Friday street
Newton John & Son, merchants & cork manufacturers, 50 St. John street, West
Smithfield
Newton Joseph & Son, fire brick merchants, Falcon dock, Bankside
Newton Joseph & William, grocers, 53 Lower Marsh, Lambeth
Newton & Kelk, builders, 12 Margaret street, Cavendish square
Newton Robert & James, upholsterers, &c. 64 & 65 Wardour street, Soho
Newton William & Son, patent agents, land surveyors & mechanical draftsmen, &
globe makers, 66 Chancery lane
Newton & Sons, timber merchants, 14 & l0l Paul street, Finsbury square
Newton & Worssam, millwrights, &c. 3 New Gloucester street, Hoxton
Newton Alexander, tobacconist, 41 Grosvenor row
Newton George, coffee rooms, 126 Whitechapel High street
Newton George, merchant, 13 Union court, Old Broad street
Newton Henry Charles, artists’ colorman, see Winsor & Newton
Newton Isaac, carpenter & builder, 20 London wall
Newton Isaac, quill & pen manufacturer, 136 Minories
Newton James, coffee rooms, 83 Fetter lame
Newton James, lace & child bed linen warehouse, 119 Upper street, Islington
Newton James, silk mercer & linendraper, 14 Leicester square
Newton James, tobacconist, 92 Ratcliff highway
Newton Jeremiah, cheesemonger, see Benson & Newton
Newton John, boot & shoemaker, 9 Adam & Eve court, Oxford street
Newton John, builder, 1 Terrace, Kensington
Newton John, coal & corn merchant, Rosemary branch building, Hoxton
Newton John, commercial boarding house, 32 King street, Cheapside
Newton John, printer, 2 Crown court, Aldersgate street
Newton John, sailmaker, 24 Lower Shadwell
Newton John Charles, cork cutter, 6 Marylebone lane
Newton Morris, solicitor, 14 Pickett street, Strand
Newton Robert, baker, 11 Crescent street, Euston square
Newton Rosina (Mrs.), curiosity dealer, 4 Hanway street, Oxford street
Newton Samuel, cattle salesman, 17 West Smithfield
Newton Samuel, tea dealer, 42 Upper Marylebone street
Newton Thomas, cabinet maker, 71 Judd street, Brunswick square
Newton Thomas, shoe agent, 34 Red Lion street, Spitalfields
Newton William, confectioner, 127 Curtain road, Shoreditch
Newton William, navy agent, see Pettet & Newton
Newton William, silk warehouseman, 4 King's arms' buildings, Wood street
Newton William, tailor, 7 Maddox street, Bond street; and 1 Upper Holland
street, Kensington
Newton William, tin plate worker, 19 Bartholomew close
Newton Sir William, John, artist, 6 Argyle street, Regent street
Nex William, carpenter, 4 Pickett place, Strand
Nias George Elmes, printer & stationer, 1 Old Jewry, Cheapside
Nias George Elmes, printer & bookseller, see Thompson & Nias
Nias Thomas, solicitor, 5 Copthall court, Throgmorton street
Nibbs Francis, glass cutters' tool maker, 18 Cross street, Blackfriars road
Nibloe Thomas, Sun P.H. 25 Noel
street, Berwick street, Soho
Nice James, farrier, l Church street, Blackfriars road
Nice Josiah, veter. surgeon, 18 St. Andrew's hill, Doctors Commons
Nice Samuel, surgeon, 18 Duke street, Lisson grove
Nice Thomas, parchment maker, 49 Bermondsey Street
Nichol Anthony & Son, merchants, Dowgate wharf, Upper Thames street
Nichol & Miller, bottle merchants, Dowgate wharf, Upper Thames street
Nichol Augustus, porkbutcher, 10 White Lion street, Goodmans fields
Nichol Benjamin, tailor, 36 Moorgate street, Bank
Nichol Francis Plummer, tailor, 6 Cullum street, City
Nichol George, wine cooper, 33 Haydon street, Minories
Nichol John, surgeon, 7 Coleman street
Nicholls Thomas, stock maker, 16 Opera arcade, Haymarket
Nicholls Thomas, tailor, 225 Regent street
Nicholls Thomas, Wilcocks, appraiser & undertaker, 122 Tooley street
Nicholls William, Coach & Horses P.H. 120 St John street road
Nicholls William, printer, 4 East Harding street, Fleet street
Nichols John & Co. nail & general ironmouger & warehouse, 65 Snowhill
Nichols John B. & Son, printers, 25 Parliament street
Nichols Joseph & James, bootmakers, 43 Liquorpond street
Nichols Charles, painter, plumber & glazier, 20 Church street, Soho
Nichols Charles, shawl manufacturer, 72 Quadrant, and Glasgow
Nichols Daniel, butcher, 57. Hindon street, Vauxhall road
Nichols Edwin, Pavilion P.
H. 10 Newcastle street, Strand
Nichols George, appraiser, 2 Trevor terrace, Knightsbridge
Nichols George, printer, 7 Earl's court, Leicester square
Nichols Henry, barrister, 2 Stone buildings, Lincoln's inn
Nichols James,
Bricklayers Arms P.H. Charles street, Hackney road
Nichols Jaines, printer, 46 Hoxton square
Nichols James, shell fishmonger, 114 Tooley street
Nichols James, surgeon, 13 Leicester place, Leicester square
Nichols Jeremiah, Kings Head
P.H. Kings place, Commercial road east
Nichols John, engraver & printer, 9 Chandos street, Covent garden
Nichols John, silversmith, &c. 38 Castle street, Leicester square
Nichols John, window glass merchant, 17 Milner terrace, Lambeth Lower marsh
Nichols Joseph, stable keeper, 31 Finsbury place north, Finsbury square
Nichols Peter, grocer & oilman, 3 Salcombe place, Regent's park
Nichols Richard, bricklayer & builder, 43 Upper Ebury street, Pimlico
Nichols Robert, cooper, 31 King street, Seven dials
Nichols Thomas, carman, 19 & 24 Dowgate hill
Nichols Thomas, ship & insurance agent, see Harrison & Nichols
Nichols William, barrister, 3 Inner Temple lane
Nichols William, coal merchant, Crown & Horse shoe wharf, 6 Upper Thames street
Nichols William, fishmonger, 8 Middle Queen's buildings, Knightsbridge
Nichols William, grocer, &c. 17 Little George street, Westminster
Nichols William, hairdresser, 31 Chalton street, Somers town
Nichols William, laceman, 30 St. Martin's court, St. Martin's lane
Nicholas Margaret & Son, corndealers, 34 Crispin street, Spitalfields
Nicholas Charles Hooper, grocer, 19 Bolingbroke row, Walworth road
Nicholas Charles Thomas, pianoforte maker, 2 Chadwell street, St. John street
Nicholas David, undertaker, 8 Dartmouth street, Westminster
Nicholas George, merchant, 3 Abchurch lane, City
Nicholas Eugene, carver & gilder, 11 Great Titchfield street, Oxford street
Nicholas John, saddler, 3 Earl's court, 33 Little Newport street
Nicholas John, stationer, 13 Upper Jubilee place, Mile end
Nicholas Nathaniel, bricklayer, &c. 10 Paddington street, Marylebone
Nicholas Samuel, clock & watchmaker, 158 Tooley street
Nicholas Thomas, George & Crown P.H. 12 Broad street, Bloomsbury
Nicholas Thomas, jeweller, 17 Great Sutton street, Clerkenwell
Nicholas William, tobacconist, 10 Pickett street, or 255 Strand
Nicholay John Augustus, furrier, by appointment, to their Majesties the Queen,
the Queen Dowager, & the royal family, 82 Oxford street
Nicholds Thomas Samuel, coffee rooms, 9 Tower dock, Tower hill
Nicholes Henry, confectioner, 71 Piccadilly
Nicholes James, Nags Head P.H.
31 New Compton street, Soho
Nicholl Iltid & Son; proctors, 11 Godliman street, Doctors commons
Nicholl George Whitlock, barrister, 3 Plowden buildings, Temple
Nicholl Henry Iltid, D.C.1. advocate, 3 College square, Doctors commons
Nicholl Iltid, Queen's proctor, 11 Godliman street, Doctors commons
Nicholl John, lasting, plush, &c. manufacturer, 5 Oat lane, Wood street
Nicholl John Whitlock, barrister, 1 Plowden buildings
Nicholl Robert Chas. barrister, 1 Plowden buildings, Temple
Nicholl William, sculptor, 1 Grafton street east, Tottenham Court road
Nicholl William Lewis, scalemaker, 16 Aldersgate street
Nicholles John, dentist & cupper, 34 Bruton street, Bond street
Nicholls Francis & Co. merchants, 66 Mark lane
Nicholls & Houseley, ready made linen warehouse, 21 St. James's street
Nicholls & Pellatt, wine merchants (successors to Ann Wooding & Son, wine
merchants), 32 King William street, and at the Shades, Old Swan, Swan stairs
Nichols Rd. & Nathaniel, merchants & warehousemen, 127 Wood street
Nicholls Ann (Mrs.), copper plate printer, 15 Chester terrace, Borough
No. Ezekiel, Carpenter s builder, 2 Percy street, Rathbone place
No. Fanny (Miss), milliner, 24 Southampton row, Bloomsbury
Nicholls Fred. printer, 2 Milton street, City, & l Aske terrace, Hoxton
Nichols William, writer, &c. 5 Northumberland street, Marylebone
Nichols William,
Westminster Hotel, Bridge court, Westminster bridge
Nichols William, wholesale shoe warehouse, 130 St. John street, West Smithfield
Nicholson, Besley & Co. wharfingers & warehouse keepers, East india & China
wharf, 12 & 14 Lower Thames street
Nicholson, Hicks & Co. wine merchant & agents, 12 Cooper's row, Tower hill
Nicholson Isaac & Co. merchants, 9 Kings arms yard. Coleman street
Nicholson John & Co. tea agents, 15 Fenchurch street
Nicholson John & William & Son, distillers, St John street Clerkenwell
Nicholson Joseph & Son, coal merchants, Phoenix wharf, Bankside
Nicholson Joseph & Son, dyers, Snow's fields, Bermondsey
Nicholson & Mannering, linendrapers Hackney road crescent
Nicholson James, linendraper, 5 & 6 Park terrace, Camden town
Nicholson & Parker, solicitors, &c. 23 Throgmorton street
Nicholson Rt. & Co. linen & woollen factors, 1 Coleman street buildings
Nicholson Benjamin, mason & builder, 61 Mark lane & 11 Minories
Nicholson Chas. M. corn factor, 19 Thornton street, Horselydown
Nicholson Elizabeth (Miss), milliner, 120 New Bond street
Nicholson George, carpet & linen warehouse, 30 Aldgate High street
Nicholson George, solicitor, 21 Abingdon street, Westminster
Nicholson George James, attorney, 5 Raymond buildings, Gray's inn
Nicholson George James, orchil, &c. manufacturer, 35 Rose lane, Spitalfields
Nicholson George S. proctor, see Cruttwell & Nicholson
Nicholson Henry, rag merchant, 7 Shoreditch
Nicholson Henry Howard, watch case maker, 5 Charles street, City road
Nicsiolson James, glass & lead warehouse, see Potts & Nicholson
Nicholson James, linendraper, 60 Bishopsgate within
Nicholson James, solicitor, 7 Mill street, Hanover square
Nicholson James, Union
Tavern, 73 Jermyn street, St. James's
Nicholson John, linendraper, see Mannering & Nicholson
Nicholson John, tinplate worker, 7 Regent place, Horseferry road
Nicholson Joseph, solicitor, see Seton & Nicholson
Nicholson Matthew, Jacobs
Well P.H. 65 Milton street, Cripplegate
Nicholson Michael Angelo, architect, 1 Melton place, Euston square
Nicholson Richard, carpet bag maker, 1 Southampton court, Southampton buildings
Nicholsom Robert, coppersmith, &c. 7 Back road. St.George's east
Nicholson Robert, hat manufacturer, 16 & 17 John street west, Blackfriars
Nicholson Robert, lasting &c. manufacturers, Flyinghorse court, Wood street
Nicholson Robert, linendraper, 6 Wellington terrace, Bayswater
Nickisson Sampson, watch maker, 33 Northampton square
Nickisson Win, iron merchant & agent, 21 King square, Goswell road
Nicklen Peter, bootmaker, see Robinson & Nicklen
Nickless John, plumber, Wellington place, West India docks
Nicklin & Coon, lithographers, 67 Newgate street
Nicklin Thomas, chairmaker, &c. 72 Great Guildford street, Borough
Nickolds (Mrs. R.) lodging house, 3 Buckingham place, Fitzroy square
Nickoll James, oil & seed broker, 77 Old Broad street
Nickolls & Shipley, corn dealers, 17 Market row, Oxford market
Nickols & Marshall, ship & insurance brokers, 33 Seething lane, Tower street
Nickols John, notary, 33 Seething lane, Tower street
Nicks Elizabeth (Mrs.), Fleur de
lis P.H. 70 Houndsditch
Nicks Henry, Robin Hood
P.H. 67 Skinner street, Bishopsgate
Nicol James & Co. tea & coffee dealers, 15 Rathbone place, Oxford street
Nicol.John & Co. ship & insurance brokers, 9 George yard, Lombard street
Nicol Robert & Co. purveyors of coffee, tea dealers & grocers to her Majesty &
H.R.H. the duchess of Kent, 18 Fenchurch street
Nicol Henry, solicitor, see Allen & Nicol
Nicol John, physician, 7 Coleman street
Nico! Robert, carpenter & builder, l Little Marlborough street, Golden square
Nicol Walter, woollendraper, 109 Regent street
Nicol William, shakspeare printing office, 60 Pall mall
Nicolas Sir Harris, k.C.M.G. barrister, 55 Torrington square
Nicolas John H. P. chemist & druggist, 7 Bow street, Covent garden
Nicolas-y-Badillo Josed, merchant, 31 Brunswick place, City road
Nicole & Capt., watchmakers, 80B, Dean street, Soho
Nicole Henry, law stationer, 1 Bream's buildings, Chancery lane
Nicoll & Dewar, scots timber merchants, Fox's lane, Shadwell
Nicoll Arthur, chemist, 4 windmill street, Tottenham court road
Nicoll Benjamin, hosier & glover, 42 Regent street
Nicoll Henry John, tailor, 6 St. James's place, St. James's
Nicoll John, rope, line & twine maker, Blue Anchor road, Bermondsey
Nicoll John, watchmaker, 117 Great Portland street, Oxford street
Nicoll Martha (Mrs.), ropemaker, 121 Union street, Borough
Nicoll Nathan Richard, jeweller, 31 St. John street road
Nicoll Rob. scotch whiskey & provision merchant, 54 Burr street, East Smithfield
Nicoll Thomas, carver & gilder, 31 Great Titchfield street
Nicoll Thomas, cloth worker, &c. 20 Tottenham street, Fitzroy square
Nicolls William, bootmaker, 21 Old Gloucester street, Hoxton
Nicolson Rev. Hugh, clerical & school agent, 6 John street, Adelphi
Nicolson Thomas, surgeon, 48 Davies street & 53 Berkeley square
Niell John, M.D. surgeon, 8 Castle street, Falcon square
Niemann John Diedrick, merchant, 33 Great Winchester street
Niemeyer John William, commercial agent, 23 Crosby hall chambers
Niesigh Joseph, Mulberry
Tree P.H. Commercial road, Whitechapel
Nightingale Joseph & Co. steel & cane reed maker, 2 Wood street, Spitalfields
Nightingale & Rood, wholesale bedding warehouse, 29 Old Compton street, Soho;
and feather dressers, 9 Maiden lane, King's cross
Nightingale Benj. painter & glazier, 70 Princes street, Lambeth
Nightingale Cornelius, drug &c. dealer, 8 Miles lane, Cannon street
Nightingale Francis, builder, 32 Hindon street, Pimlico
Nightingale George, horsehair manufacturer, 18 New Gloucester street, Hoxton
Nightingale Samuel, fruiterer, 28 Museum street, Bloomsbury
Nilkens Johann Jacob, wine merchant, Custom house quay
Nimmo Edward, butcher, 8 Water lane, Blackfriars
Nind John & Dorothy, paper hangers, 10 Beech street, Barbican
Nind Benjamin Wharton, solicitor, 4 Clement's lane, Lombard street
Nind John, paper stainer, 1 Union row, Kingsland road
Nind Joseph, paperhanger, 162 Fleet street
Nind Robert, paperhanger, 4 West place, Islington green
Niner Allan, lamp & glass warehouse, see Greene & Niner
Niner Allen Gardener, lamp lustre maker, see quarrill, Niner & Co
Niner John, baker, 47 High street, Shadwell
Niner William Thomas, saddler, 229 Oxford street
Ninnis Julia (Mrs), ladies' school, 30 Surrey square, Old Kent road
Ninsel Jolin, merchant, 7 Crescent, Minories
Nisbert Richard, plumber, painter &c. 11 Whitcombe street, Pall mall
Nisbet James & Co. booksellers & stationers, 21 Berners street, Oxford street
Nisbet George R. wine merchant & agent for Dublin stout, and east india ale
stores, &c. 11 Jermyn street, St. James's
Nisbet James, hairdresser, &c. 39 Wigmore street, Cavendish square
Nisbett George, lighterman, 3 Abdy street, Horselydown
Nisbett Thomas, meat salesman, 8 Newgate market
Nisi Prius Office, Judge's chambers, Serjeants' inn, Chancery lane
Nitsch Ferdinand, tailor, see Roberts & Nitsch
Nix Susannah & Son, butchers, 282 Bermondsey street
Nix Waddelow, Exeter Hall hotel & coffee rooms, 375 Strand
Nix William, surgeon, 59 Park street, Grosvenor square
Nixey Thomas, hosier, glover, &c. 80 St. John street, Clerkenwell
Nixey William George, oil & colorman, 22 Moor street, Soho