Whitehead's were based in Halifax and made machines up to the about the 1970s - mostly emblazoned with their "Junior -- WHITEHEAD -- Machinery" logo . They were sold through companies like Parry's in London. Generally what you'd call a second-string manufacturer much in the same ilk as Cooksley or Metalclad (or nowadays possibly Sedgwick), i.e. they manufactured the general joinery type machines like rip saws, overhand planers, thicknessers and morticers but kept away from the more complicated stuff like 4-side moulders, pin routers, etc. although they did make a 3-sided throughfeed moulder based on their 12 x 9in thicknesser. Most of the machines I've seen are cast iron base machines and very heavy and simple so nothing much to go wrong. Which model of saw did you get - I've got some catalogue info (in a Parry's catalogue of the late 1950s) on Whitehead kit, albeit not very much
Scrit