| 21 Palmer Street, S.W.1, London, England |
| 21 Panton Street, London, England |
| 21 Parade, Leamington Spa, England |
| 21 Pelham Street, SW7, London, England |
| 21 Piccadilly Arcade, London, England |
| 21 Princes Arcade, S.W.1, London, England |
| 21 Queen Street, Peterborough, England |
| 21 Queen's Road, Bayswater, London, England |
| 21 Russell Street, Plymouth, Devon, England |
| 21 Shepherd Market, W.1, London, England |
| 21 Snaresbrook Drive, Stanmore, Middlesex, England |
| 21 St. Andrew's Street, Hertford, England |
| 21 Swallow Street, W.1, London, England |
| 21 Tavistock Road, Plymouth, Devon, England |
| 21 The Arcade, Bournemouth, England |
| 21 The Green, Westerham, Kent, England |
| 21 The Pantiles, Tunbridge Wells, Kent, England |
| 21 The Strand, Bude, England |
| 21 Torwood Street, Torquay, Devon, England |
| 21 Victoria Street, Norwich, Norfolk, England |