UPDATE:
Around early 1962, Johnsen & Jorgensen acquired a large stake in Clayton Mayers (famous for importing the Joseph Inwald Jacobean range). J&J had for many years been sole UK distributors for Sherdley glass and placed the only adverts for many, many years previously.
I have noted that Cl.Ma. started producing decorative glassware (transfers, I believe) mid-1961 and wondered whether this was a precursor to J&Js interest. In any event, Cl.Ma. started producing the 'Colourcraft' range in 1963.
The question is, although it's a tenuous link did Sherdley have a controlling interest in J&J? Probably not as J&J always seemed very independant, but there may be some link as to why Cl.Ma. started 'producing' decorative ware and perhaps Sherdley supplied the glassware?
Phew, got there eventually
