Have you contacted Keith Cummings at University of Wolverhampton?
He might be able to help you.
Just going back to what Mark Hill said earlier in the thread and Frank's earlier comment about dates.
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It seems there are two 'Studios' associated with Royal Brierley
The one associated with these iridescent pieces is
Royal Brierley Studio range which Michael Harris was involved in and apparently has a start date of 1986
http://www.millersantiquesguide.com/articles/royalbrierleystudio/Some pictures here that are show the similarities between the IOW glass version and Royal Brierley Studio range version
http://iowstudioglass.wikidot.com/laceThe other is the
Studio at Royal Brierley which I believe was started up in the late 70's ?
I think Catherine Hough's perfume will belong to this one (perhaps I shouldn't have mentioned it?)
There was an International conference and workshop held at the RCA in 1976 entitled 'Working with Hot Glass'. Perhaps Royal Brierley decided after that to try and set up the Studio at Royal Brierley?
I can't find anything in my book that talks about Royal Brierley though.
Jane Beebe is mentioned but no mention of that as far as I can see.
There is mention of 'the late Colin Gill, a factory trained glass maker from the Midlands who taught at the Brierley Hill Glass Centre' and it says he provided 'valuable instruction at Cowdy Glass Workshop in Newent'.
It might be worth trying to contact someone from Cowdy Glass to see what is remembered of the Studio at Royal Brierley.
Darrell Greenhalgh from what the book says, was at Brierley Hill Glass Centre in the mid 80's from what I can deduce. He may be another contact who might have information on Royal Brierley Studio range perhaps since it was launched at a similar time?
Nothing mentioned in my other book that could even help as a lead - sorry.
m