Some products made in Sheffield and advertised in the above mentioned publication.
Apologies for the wonky scans - I had to use a hand held scanner and my hands are not the steadiest anymore:
"Dunelt" Hollow Steel Bars from Dunford & Elliott
"Celfor" Soft Centred Steel from Sanderson Brothers & Newbould
Precision Tools from Moore & Wright
Lots of things from John Holding & Co