W. F. Dennis

of 101 Leadenhall Street, agents for all kinds of Wire.
1869 William Frederick Dennis founded an agency in London
Later joined by his brother, Arthur Dennis
1880 W. F. Dennis, engineer, of 101 Leadenhall Street, London, became a member of Iron and Steel Institute. [1]; works - Bethnal Green.
1881 Also Dennis and Dennis.[2] Manufacturer of all kinds of wire netting.[3]
Successor: W. F. Dennis and Co