| Veronica scutellata | GB, VC17 Surrey, Richmond Park | Herbert Kenneth Airy Shaw Noel Yvri Sandwith Victor Samuel Summerhayes | | 17/7/1930 | K |
| Mentha aquatica | GB, VC17 Surrey, Richmond Park, Pen Pond | Edgar Wolston Bertram Handsley Milne-Redhead Noel Yvri Sandwith | | 14/9/1934 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC17 Surrey, Richmond Park, Pen Pond | Edgar Wolston Bertram Handsley Milne-Redhead Noel Yvri Sandwith | | 14/9/1934 | K |
| Arnoseris minima | GB, VC17 Surrey, Tilford | Cecil Ivry Sandwith Noel Yvri Sandwith | Harold Stuart Thompson | 16/8/1916 | BIRM |
| Arnoseris minima | GB, VC17 Surrey, Tilford | Cecil Ivry Sandwith Noel Yvri Sandwith | Harold Stuart Thompson | 19/8/1916 | BIRM |
| Veronica persica var. kochiana | GB, VC17 Surrey, Tilford | Noel Yvri Sandwith | | 14/5/1933 | K |
| Fallopia dumetorum | GB, VC17 Surrey, Wimbledon Common | John Patrick Micklethwait Brenan Noel Yvri Sandwith | John Patrick Micklethwait Brenan | 10/1948 | K |
| Glechoma hederacea | GB, VC17 Surrey, Wisley | John Patrick Micklethwait Brenan Noel Yvri Sandwith | John Patrick Micklethwait Brenan | 6/4/1946 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC17 Surrey, Wisley | J Fraser Noel Yvri Sandwith | | 21/8/1927 | K |
| Hypochaeris radicata x glabra = H. x intermedia | GB, VC17 Surrey, Wonersh | Noel Yvri Sandwith | | 16/8/1953 | K |
| Hypochaeris radicata x glabra = H. x intermedia | GB, VC17 Surrey, Wonersh | Noel Yvri Sandwith | | 16/8/1953 | K |
| Hypochaeris radicata x glabra = H. x intermedia | GB, VC17 Surrey, Wonersh | Noel Yvri Sandwith | | 22/8/1953 | K |
| Hypochaeris radicata x glabra = H. x intermedia | GB, VC17 Surrey, Wonersh | Edward Charles Wallace Noel Yvri Sandwith | | 16/8/1953 | K |
| Callitriche obtusangula | GB, VC18 South Essex, Bradwell | Noel Yvri Sandwith | | 25/6/1955 | K |
| Veronica longifolia | GB, VC18 South Essex, Dagenham | Cecil Ivry Sandwith Noel Yvri Sandwith | | 27/9/1936 | K |
| Carex otrubae x remota = C. x pseudoaxillaris | GB, VC19 North Essex, Heybridge | Noel Yvri Sandwith | | 26/6/1955 | BM |
| Potamogeton berchtoldii | GB, VC21 Middlesex, Bushy Park | Arthur Hugh Garfit Alston Noel Yvri Sandwith | | 8/8/1940 | SLBI |
| Ballota nigra | GB, VC21 Middlesex, Chiswick | Noel Yvri Sandwith | | 9/7/1946 | K |
| Senecio squalidus | GB, VC21 Middlesex, City of London | Noel Yvri Sandwith | Botanical Society & Exchange Club of The British Isles | 14/9/1943 | SLBI |
| Senecio squalidus | GB, VC21 Middlesex, City of London | Noel Yvri Sandwith | Botanical Society & Exchange Club of The British Isles Royal Botanic Gardens, Kew | 22/6/1944 | SLBI |
| Thymus chamaedrys | GB, VC21 Middlesex, Harefield | Noel Yvri Sandwith | Noel Yvri Sandwith | 24/8/1947 | K |
| Carex appropinquata | GB, VC21 Middlesex, Springwell Moor | Albert Bruce Jackson Noel Yvri Sandwith | Noel Yvri Sandwith | 9/5/1936 | BM |
| Glebionis segetum | GB, VC22 Berkshire, Aldermaston | Noel Yvri Sandwith | | 24/7/1960 | K |
| Glebionis segetum | GB, VC22 Berkshire, Aldermaston | Noel Yvri Sandwith | | 24/7/1960 | K |
| Glebionis segetum | GB, VC22 Berkshire, Aldermaston | Noel Yvri Sandwith | | 24/7/1960 | K |
| Glebionis segetum | GB, VC22 Berkshire, Aldermaston | Noel Yvri Sandwith | | 24/7/1960 | K |
| Lamium purpureum var. hybridum | GB, VC22 Berkshire, Aldermaston | Noel Yvri Sandwith | | 13/5/1956 | K |
| Misopates orontium | GB, VC22 Berkshire, Beenham | Noel Yvri Sandwith | | 22/8/1948 | K |
| Silene conica | GB, VC22 Berkshire, Frilford | Noel Yvri Sandwith | | 6/1923 | K |
| Silene conica | GB, VC22 Berkshire, Frilford | Noel Yvri Sandwith | | 7/6/1923 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC22 Berkshire, Wytham | Noel Yvri Sandwith | | 27/8/1927 | K |
| Cephalanthera longifolia | GB, VC23 Oxfordshire, Chinnor | Noel Yvri Sandwith | | 5/6/1922 | K |
| Veronica persica | GB, VC23 Oxfordshire, Henley on Thames | Edgar Wolston Bertram Handsley Milne-Redhead Noel Yvri Sandwith | | 24/5/1934 | K |
| Veronica persica var. kochiana | GB, VC23 Oxfordshire, Henley on Thames | Edgar Wolston Bertram Handsley Milne-Redhead Noel Yvri Sandwith | | 24/5/1934 | K |
| Mentha arvensis x aquatica = M. x verticillata | GB, VC23 Oxfordshire, Oxford,Port Meadow | John Patrick Micklethwait Brenan Noel Yvri Sandwith | | 30/8/1941 | K |
| Lamium galeobdolon subsp. montanum | GB, VC24 Buckinghamshire, Bradenham | Noel Yvri Sandwith | | 30/5/1931 | K |
| Lamium galeobdolon subsp. montanum | GB, VC24 Buckinghamshire, Bradenham | Noel Yvri Sandwith | Noel Yvri Sandwith | 30/5/1931 | K |
| Lamium galeobdolon subsp. montanum | GB, VC17 Surrey, Kew Gardens Cultivated GB, VC24 Buckinghamshire, Bradenham | Noel Yvri Sandwith | | 9/5/1933 | K |
| Galeopsis bifida | GB, VC24 Buckinghamshire, Cadmore End | Noel Yvri Sandwith | | 11/8/1946 | K |
| Festuca arundinacea | GB, VC24 Buckinghamshire, Medmenham | Noel Yvri Sandwith | | 27/5/1949 | K |