Hi Lindyloo and Jennyann thank you for your kind assistance and links, some very helpful information, still waiting to clarify the name once I do I will let you know
My father, Albert ('Bert') Francis, was General Manager of Bloxidge Brothers right up to his untimely death at my wedding reception in Penzance on 1st July 1967. On the odd occasions when I had a free Saturday from school in Solihull, my father would take me with him to visit the factory and yes, I'm pretty sure it was in Soho Road, Handsworth.
I used to love being shown around "the works" (as it was known) by the Foreman whose name, I'm almost certain, was Tom. (I'm not sure I ever knew his surname.) There was also a small factory in Lye which I think used to produce castings for the jewellery. From (now rather distant) memory, the products were set predominantly with marcasite stones, were at the cheaper end of the costume jewellery market and the principal stockist was indeed Woolworths.
My father established the company's export market and I remember my family would always receive a Christmas card from his Australian 'agent' (whose name, unfortunately, I cannot remember). The London office was managed by Mr C R (Russell) Howitt.
If there is any more information you think I might be able to help with, I will be more than pleased. Congratulations and best wishes to your mother-in-law, and I hope I haven't missed your 'copy deadline'!
Kind regards, Alan Francis