A tidy up of this one...
Godfrey Thornfield was born in 1904. Invented a safety razor c1942 and got a US patent in 1942.
He had a shop at 40 Sackville Street, W1 with company Godfrey Thornfield Ltd. Sold bottles, jars and a range of decorative items, guessing that he imported glass and decided to set up his own bottle factory, hence Poplar Glassworks Limited. Clearly got into difficulties as his company had a liquidation request filed by a glass importer (Hall, of Holborn). Poplar Glassworks also got liquidated in 1948. He set up G Thornfield Ltd in 1953 and was a director until 1994 age 90. Shop in Sidcup, Kent selling similar.
Possibly he dealt with Canning Glass works but not found a connection.
Not found set up date so far.