| 20 Duke Street, S.W.1, London, England |
| 20 East 55th Street, New York, USA |
| 20 Eaton Terrace, London, England |
| 20 Eccleston Street, S.W.1, London, England |
| 20 Elm Hill, Norwich, Norfolk, England |
| 20 Endell Street, W.C.2, London, England |
| 20 Fitzroy Square, W.1, London, England |
| 20 George Street, St. Albans, Hertfordshire, England |
| 20 Goodge Street, London, England |
| 20 Great Russell Street, London, England |
| 20 Grosvenor Road, Newcastle-upon-Tyne, England |
| 20 High Street, Dorchester, Dorsetshire, England |
| 20 High Street, Lyndhurst, Hampshire, England |
| 20 Highgate Road, London, England |
| 20 Hope Street, Ayr, Scotland |
| 20 Huntriss Row, Scarborough, England |
| 20 Ireland's Lane, Dundee, Scotland |
| 20 James Street, Oxford Street, London, England |
| 20 King Street, Richmond, Surrey, England |
| 20 Knightsbridge, London, England |