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The twist at the bottom with 6 knots (twists) indicates that the Coat of Arms is missing (not lost, just not included), and your design is only the "Crest" that is found at the top. Your design is registered in England.
The name has undergone several changes since 1800 when it was known as "Jennens & Co. Ltd". In 1856 "Ltd" (a partnership) was dissolved. In 1912 their catalog listed your name. Today the name is different. The company has Royal warrants to make buttons, ranks, insignia, etc, etc. for UK armies and navies. They also have a huge museum in London, currently closed due to Covid 19, until mid-May 2021. They also make buttons, pins, etc., for private industries.
Their website has Contact information.