S. N. Kilner & Sons Ltd
Initial research has identified the name on this knife as a Leeds company who were based at 123 Albion Street in 1939. They were retail jewellers selling watches, cutlery and silver plate. The knives were probably made for them in Sheffield by an unidetified manufacturer.
If you have any further details please share them with us via enquiries@hawleytoolcollection.com
....