of Crown Works, 25 Crown Street, Leeds
1894 Listed as electrical engineers.
1897 Advertisement. Buildings heated. Hot Water Boilers. Oldroyd's Radiators. Edwin Oldroyd and Co (Ltd), Engineers, Leeds. Established 1848.[1]
1908 Todmorden Hippodrome. 'The fireproof curtain is from Crown Works, Leeds (Messrs. E. Oldroyd and Co.)'[2]
1912 Messrs Oldroyd Ltd, Crown Works, Leeds.[3]