I have an Anon Shaw branded 9ft Pike rod I use with and old Mitchell (my fishing kit is all 60's / 70's ...I just like the action of fibreglass)...On a fishing forum Anon Shaw are often discussed and as mentioned on here they were a short lived importer in the late 60's trading out of 62 Clarendon Road, Hornsey, London N8.
Their logo was a fish shape made from the letters as per item 124300014585 on "that" website.
Airguns and fishing tackle went hand in hand back then as now in sports shops. I don't know if the address above was also a retail shop, or just an importer's address unfortunately.
ATB, Ed