| ARM | Co. Armagh, Ireland (now Northern Ireland) |
| BDF | Bedfordshire, England |
| CUL | Cumberland, England |
| DBY | Derbyshire, England |
| DNB | Dunbartonshire, Scotland |
| DUR | Co. Durham, England |
| ERY | East Riding of Yorkshire, England |
| HRT | Hertfordshire, England |
| HUN | Huntingdonshire, England |
| LAN | Lancashire, England |
| LEI | Leicestershire, England |
| LIN | Lincolnshire, England |
| LKS | Lanarkshire, Scotland |
| MDX | Middlesex, England |
| MGY | Montgomeryshire, Wales |
| MLN | Midlothian, Scotland |
| NBL | Northumberland, England |
| NFK | Norfolk, England |
| NTH | Northamptonshire, England |
| NRY | North Riding of Yorkshire, England |
| OXF | Oxfordshire, England |
| PEM | Pembrokeshire, Wales |
| PER | Perthshire, Scotland |
| RFW | Renfrewshire, Scotland |
| SAL | Shropshire, England |
| STI | Stirlingshire, Scotland |
| WES | Westmorland, England |
| WRY | West Riding of Yorkshire, England |
| YKS | Yorkshire (Riding unknown - also used for the City of York, which was not in any of the Ridings) |