Spoke to Roger and he isn't aware of the periodical you mention, but I did see a copy of:
The National Flint Glass Maker's Friendly Society of Great Britain and IrelandIs this what you are looking for?
Although they only have a few very early copies (I took a photo of the April 1858 cover if you're interested), he is sure they have copies of the Glass Circle. I can only suggest you contact Broadfield House and either speak to him, or one of his collegues.
http://www.dudley.gov.uk/index.asp?pgid=4202Name: Broadfield House Glass Museum
Address: Compton Drive
Kingswinford
West Midlands
DY6 9NS
Tel: 01384 812745