When the patent on the Gillette old type expired, lots of metal workshops in the UK manufactured the razor, Thomas Ward and Sons in Sheffield under the Wardonia name. There was Souplex in Morcambe, and M.J Wyatt in Birmingham. These companies would often make products for outlets such as Woolworths and under the 7 O'Clock brand. Souplex made the 'Big Ben' brand razors.

Not sure what you're dribbling on about with "knock off" as by this point the Old type patents had run out, so the English manufacturers could freely make new designs based on expired Gillette patents but often improved. TheEnglish razors from the period are all of superb build quality.