Worshipful Company of Mercers

One of the Livery Companies of the City of London.

Its motto is Honor Deo, (Honour to God).

Although of even older origin, the Company was incorporated under a Royal Charter in 1394 and is ranked as the first of the so-called "Great Twelve City Livery Companies".

Its developed as a trade association for general merchants, and especially for exporters of wool and importers of velvet, silk and other luxurious fabrics.

The third and present Mercers' Hall was opened in May 1958, Ironmonger Lane, off Poultry London:

Lord Mayors who were members of the Mercers Company include Richard Whittington, Sir John Gresham, Sir Richard Gresham, and Sir Alexander Michael Graham.

John Dee (1527–1608), mathematician and astrologer was a member. Sir Thomas More and Sir Winston Churchill joined the Company by Redemption. A fuller list can be found on the Wikipedia page.