Post WWII bowie style hunter. Very popular knife under the Rodgers name and under the brand John Nowill (
https://www.gunstar.co.uk/john-nowi...-bowie-knife-sheath-by-john-no/Blades/1071451 ) with minor modification to the handle pinning and shape. They even did some for the gunsmithing firm Holland and Holland years ago -
https://www.invaluable.com/auction-...n-a-scarce-cased-150th-anniv-252-c-8804016bde .
This is the newest version -
https://sheffieldknives.co.uk/acatalog/5-52.html#SID=9 .
The version like yours was sold through the 90's at least.
A firm named Eggington bought the William Rodgers, Joseph Rodgers, and Wostenholm trademarks in the 70's, and still owns them now. J Adams owns Nowill, Hopkinson, and their own J Adams brand. Adams also owns J R Hopkinson, who forges / forged the blade blanks for a lot of the Sheffield cutlery industry post WWII, so that accounts for the knives being close in design between a bunch of companies.
Much like the American cutlery industry, there's a lot of friendly subcontracting between firms. In fact, Eggington and Adams are literally just a few doors down from each other in Sheffield.