| Society of Antiquaries of London | http://www.sal.org.uk |
| Bedford Museum | http://www.cecilhigginsartgallery.org/ |
| Birmingham Museum & Art Gallery | http://www.bmag.org.uk |
| Bristol City Museum and Art Gallery, Department of British Archaeology | |
| British Museum | http://www.thebritishmuseum.ac.uk |
| Chippenham Museum and Heritage Centre | http://www.chippenham.gov.uk/museum |
| Cuming Museum, Southwark | http://www.southwark.gov.uk/DiscoverSouthwark/Museums/TheCumingMuseum |
| Fitzwilliam Museum, Cambridge | http://www.fitzmuseum.cam.ac.uk |
| Hull and East Riding Museum | http://www.hullcc.gov.uk/museums/hulleast |
| Lockdales, Auctioneers | http://www.lockdales.com |
| Museum of London | http://www.museumoflondon.org.uk |
| National Liverpool Museums | http://www.liverpoolmuseums.org.uk |
| Pewter Society | http://www.pewtersociety.org |
| Royal Albert Memorial Museum & Art Gallery, Exeter | http://www.rammuseum.org.uk/ |
| Salisbury and South Wiltshire Museum | http://www.salisburymuseum.org.uk |
| Matthew Barton Ltd. | http://www.matthewbartonltd.com/ |
| Glyn Everson | |
| Joseph Patrick Keane | |
| Ivor Noel-Hume | |
| Peter Marsh | |
| Timothy Millet | http://www.historicmedals.com/ |
| Dr. Michael Mitchener | |
| Andrew Peers | |
| Thomas Wheeler Wood | |
| Chris Wren |