Hi Sue, I'm really a bit of a novice but my hunch is that if your Webb's soda was 'by Royal appointment' then they would have been listed in Pigot's directory which was a trade directory. I think there's a link to it on 'Cyndi's List' - a most excellent website if you've never used it. Otherwise it might be worth writing to the Museum of London, London Wall, London EC2 [tel: 0207 600 3699] or the Victoria & Albert Museum, Cromwell Rd, London SW7 [tel: 0207 938 8500]. Also try the Rootsweb London list - london-'@rootsweb.com, there are lots of v. knowledgable people there. You could also try writing/emailing the Society of Genealogists. Good luck. Paula