Londoner, Caren Downie, started selling her ByOcular bifocal spectacle designs around 4 years ago. With a small team she is extending the range. See Blogroll for a link.
Vita / Parker / Earle / Boffin / Catseye / Arsenic chip tort / Red tort / Choc tort / Tortoiseshells. – The spectacles can be customized.