There are some directories here but difficult to search -
http://specialcollections.le.ac.uk/digital/collection/p15407coll9Also a few references to Boot or Shoe Factories.
Leicestershire Mercury 02 January 1864
TO BE LET, BOOT and SHOE FACTORY, situate the Haymarket, Leicester; fitted up with Steam Engine, Gas, Shelving, &c,
Leicester Journal 11 May 1866
Mr. Scrimshire, Bootmaker, 46, Gallowtree-gate
Leicester Journal 12 April 1872
Valuable 3-Storey Shoe Factory, 50, Southgate-street, Leicester.
Leicester Journal 12 July 1872
VALUABLE FREEHOLD MESSUAGES, SHOE FACTORY, and LAND, CHESTER-STREET, BRUNSWICK-STREET, LEICESTER.
Leicester Journal 23 May 1873
Large Boot and Shoe Warehouse and Factory, Marble-street, Newark-street, Leicester. TO SOLD BY AUCTION
Leicester Journal 15 May 1874
Very valuable Freehold Old-Licensed Inn, Shoe Factory, and Four Dwelling Houses, situate in the Holy Bones, Jewry Wall-street and Sycamore-lane,
David