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Partner of Edward Lycett as bucklemakers fom 1783

25th February 1784- Proceedings of the Old Bailey, trial ref t17840225-62
Trial mentions bridges for buckles and indicates that Lycett and Lowndes were manufacturing buckles on a large scale
The detail does not mention address but Old Bailey Sessions: Sessions Papers - Justices' Working Documents of 29 January 1784 includes " the Information of Edward Lycett of No 9 Round Court Saint Martin le Grand Working Silversmith"

14 July 1789 - London Gazette 13114 announced the partnership with Lycett was dissolved

Grimwade page 402 gives, unillustrated, the only mark of Thomas Lycett & Edward Lynes, entered as bucklemakers at 2, St Anne's Lane on 1 November 1783.
This is an example, seen on a buckle. The mark was only in use for six years as the partnership was dissolved in 1789.
I have only ever seen one other example of the mark.

4 October 1786 Jasper Richer son of John Taylor of Camberwell Merchant apprenticed to Thomas Lowndes of Saint Martins Legrand Middlesex Goldsmith.