Incorporation
The Company is number 40 in the order of precedence of the Livery Companies of the City of London.
| First mentioned – Mayor's Court | King Edward II | 1299 |
| Inclusion of six Blacksmiths in Common Council | King Edward III | 1368 |
| First formal passing of Bye-Laws | King Edward III | 1372 |
| Ordinance approved by | Queen Elizabeth I | 19 January 1571 |
| First Charter of Incorporation | Queen Elizabeth I | 20 April 1571 |
| Second Charter of Incorporation | King James I | 21 March 1604 |
| Third Charter of Incorporation | King Charles I | 15 February 1638 |
| Bye Laws approved by Lord High Treasurer and Chief Justices of both Benches | King Charles I | 12 January 1640 |
| Fourth Charter of Incorporation | King James II | 18 February 1685 |
| Arms confirmed and supporters granted | Queen Elizabeth II | 20 April 1990 |