Norwich Boot and Shoe Industry

We are in the process of compiling a map of all the locations of the norwich shoe factories and the supporting industries. There may well be errors in the current map and we would be grateful for any corrections. Also can you help with factories not mentioned? Click the to zoom into the map at the factory location.
Map of norwich shoe factories
Andrew's Heels Mile X Lane map link
Arthur Howlett  Fishergate map link
B A Martin & Sons ???????? not on map icon
Barith Shoes ???????? not on map icon
Bally Hall Road map link
Batson & Webster Fishergate map link
Bowhill & Hubbard Heigham Street map link
Bowhill & Elliott London Street map link
Buckinghams Shoe Shop London St/Davy Place map link
British United starling Road map link
Chamberlin  Botolph Street map link
Chittock  Dibden Road map link
Co-op/ CWS  Mountergate map link
Cooks Brushes Shadwell St map link
Dougill & Hastings Pitt st? map link
Edwards St Saviours map link
Edwards & Holmes Drayton Road map link
Evans Salhouse Road map link
John F Kirby Pitt street map link
Florida Salhouse Road map link
Flextoe Calvert Street map link
H B Cares Last Makers Whiting Road map link
HM Prison   map link
Howes Magdalen street map link
Howlett & White St George St map link
Hurrells Magdalen St map link
John Culyer & Sons Tanners Duke Street map link
James Southall & Co Crome Road map link
Kiltie/SL Witton St George Street map link
Maidment  Westwick Street map link
Mansfiedl Box Company St Saviours map link
Meadows Fishergate map link
Meadows Peacock Street map link
Middleton & Francis Westwick Street map link
Mobbs & Lewis Magdalen Street map link
Novic Shoes (Heathside) Vulcan Road map link
Noverres Shoes Quayside map link
Norwich Manufacturing Co. Pitt St/St Saviours map link
O & A Miller last makers Waterwork Road map link
Octopus North Walsham not on map icon
Osoeasie (Slippers) Northumberland street map link
P Haldinstein & Sons Queens Street map link
P. Segger Botolph Street map link
Pell Footwear   map link
Plastak Ring Road map link
Ponds Shoe Shop Castle Meadow map link
R.Roberts (Norwich)ltd off Pottergate map link
Sayfarne   not on map icon
S L Witton Colegate map link
Sexton, Son & Everard Oak Street/St M's plain map link
Shingler & Thetford Pottergate map link
Shorten & Armes Esdelle street map link
Standard Engineering Fye Bridge street map link
Starling Muspole St map link
Thompson Golden Dog Lane map link
Trimfoot Starling Road map link
Van Dal (Florida) Drayton Road map link
Wards Magdalen Street map link
William George & Sons Tanners Barrack Street map link
W H H Clarke Northumberland St map link
W H H Clarke Sussex St map link
Wyatts Magpie Road map link