I couldn't find any threads on here about this glassworks.
I came across this information today
'Glass furniture from companies like Osler (and its British competitors, Defries & Sons and the Coalbourne Hill Glass Works) had another distinct advantage. Because the glass cutting was geometric, not figural, the decoration was acceptable to Muslim rulers.'
Source: NY Times 16 June 2006
This appears to say they produced glass furniture and were competitors to Osler