| Potamogeton berchtoldii | GB, VC28 West Norfolk, Thompson Water | George Russell Bullock-Webster | The British Museum Alfred Fryer Charles Bailey | 23/9/1897 | MANCH |
| Potamogeton pectinatus | GB, VC27 East Norfolk, Waxham | Charles Edward Moss | The British Museum Alfred Fryer | 16/8/1909 | MANCH |
| Potamogeton pectinatus | GB, VC27 East Norfolk, Barton Broad | Charles Edward Moss | The British Museum Alfred Fryer | 26/8/1909 | MANCH |
| Sorbus arranensis | GB, VC100 Clyde Islands, Glen Catacol | J M Waterston | The British Museum | 9/1921 | E |
| Spergularia rubra | GB, VC113 Channel Islands, Jersey,West Mount | Alfred James Wilmott | The British Museum | 8/6/1922 | SLBI |
| Euphrasia nemorosa | GB, VC11 South Hampshire, Hambledon | Patrick Martin Hall | The British Museum Patrick Martin Hall | 6/7/1935 | BR |
| Potamogeton gramineus | GB, VC106 East Ross & Cromarty, Tain | Alexandra Stewart Sandeman | The British Museum | 8/1937 | E |
| Potamogeton perfoliatus x crispus = P. x cooperi | GB, VC20 Hertfordshire, Grand Union Canal at Little Tring | George Taylor | The British Museum | 2/8/1939 | BIRM |
| Potamogeton friesii x crispus = P. x lintonii | GB, VC59 South Lancashire, Stockport | George Taylor | The British Museum | 11/7/1940 | MANCH |
| Potamogeton filiformis x pectinatus = P. x suecicus | GB, VC64 Mid-west Yorkshire, Harewood | George Taylor | The British Museum | 2/8/1940 | MANCH |
| Potamogeton filiformis x pectinatus = P. x suecicus | GB, VC64 Mid-west Yorkshire, Harewood | George Taylor | The British Museum | 2/8/1940 | SLBI |
+ | Potamogeton nodosus | GB, VC7 North Wiltshire, Holt,River Avon | George Taylor | British Museum (Natural History) The British Museum | 28/8/1940 | MANCH |
| Potamogeton filiformis x pectinatus = P. x suecicus | GB, VC65 North-west Yorkshire, West Tanfield | George Taylor | The British Museum | 29/8/1940 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC54 North Lincolnshire, Belton | George Taylor | The British Museum | 2/8/1941 | MANCH |
| Potamogeton trichoides | GB, VC63 South-west Yorkshire, Brighouse | George Taylor | The British Museum | 20/6/1942 | MANCH |
| Potamogeton filiformis x pectinatus = P. x suecicus | GB, VC64 Mid-west Yorkshire, Ripon | George Taylor | The British Museum | 12/7/1942 | SLBI |
+ | Potamogeton berchtoldii x acutifolius = P. x sudermanicus | GB, VC9 Dorset, Arne | F C Steward | The British Museum | 10/1942 | MANCH |
| Potamogeton obtusifolius | GB, VC59 South Lancashire, Gorton | George Taylor | The British Museum | 10/5/1943 | MANCH |
| Potamogeton friesii x crispus = P. x lintonii | GB, VC59 South Lancashire, Gorton | George Taylor | The British Museum | 10/5/1943 | SLBI |
| Potamogeton lucens x gramineus = P. x angustifolius | GB, VC63 South-west Yorkshire, Hatfield | John Martin Taylor | The British Museum | 15/8/1943 | MANCH |
+ | Potamogeton praelongus x perfoliatus = P. x cognatus | GB, VC54 North Lincolnshire, Belton | John Martin Taylor | British Museum (Natural History) The British Museum | 22/12/1943 | MANCH |
+ | Potamogeton praelongus x perfoliatus = P. x cognatus | GB, VC54 North Lincolnshire, Belton | John Martin Taylor | The British Museum | 3/7/1944 | MANCH |
| Potamogeton polygonifolius | GB, VC64 Mid-west Yorkshire, Pannal | George Taylor | The British Museum | 10/7/1944 | MANCH |
| Potamogeton trichoides | GB, VC63 South-west Yorkshire, Rothwell | George Taylor | The British Museum | 21/7/1944 | MANCH |
| Potamogeton gramineus x perfoliatus = P. x nitens | GB, VC67 South Northumberland, Riding | George Taylor | The British Museum | 29/7/1944 | SLBI |
| Potamogeton lucens x gramineus = P. x angustifolius | GB, VC101 Kintyre, Loch Cill an Aonghais | John Scott Lennox Gilmour | The British Museum | 31/7/1944 | E |
| Potamogeton filiformis x pectinatus = P. x suecicus | GB, VC65 North-west Yorkshire, Langthorpe | George Taylor | The British Museum | 4/8/1944 | MANCH |
| Potamogeton lucens x gramineus = P. x angustifolius | GB, VC61 South-east Yorkshire, Routh | George Taylor | The British Museum | 24/8/1944 | MANCH |
| Potamogeton gramineus | GB, VC90 Angus, Monikie Reservoirs | George Taylor | The British Museum | 9/9/1944 | E |
| Potamogeton filiformis | GB, VC90 Angus, Kinnell | George Taylor | The British Museum | 12/9/1944 | MANCH |
| Potamogeton filiformis | GB, VC90 Angus, Kinnell | George Taylor | The British Museum | 12/9/1944 | SLBI |
| Potamogeton obtusifolius | GB, VC67 South Northumberland, Crag Lough | George Taylor | The British Museum | 29/9/1944 | MANCH |
| Potamogeton alpinus | GB, VC67 South Northumberland, Crag Lough | George Taylor | The British Museum | 29/9/1944 | MANCH |
| Potamogeton polygonifolius | GB, VC64 Mid-west Yorkshire, Pannal | George Taylor | The British Museum | 15/10/1944 | MANCH |
| Orchis mascula | GB, VC15 East Kent, Old Wives Lees | Douglas Henry Kent | The British Museum | 14/4/1945 | BR |
| Potamogeton gramineus | GB, VC83 Midlothian, West Calder | George Taylor | The British Museum | 9/6/1945 | E |
| Potamogeton pusillus | GB, VC78 Peeblesshire, Traquair Cultivated | George Taylor | The British Museum | 5/7/1945 | MANCH |
| Potamogeton gramineus | GB, VC64 Mid-west Yorkshire, Malham Tarn | George Taylor | The British Museum | 15/7/1945 | SLBI |
| Potamogeton filiformis x pectinatus = P. x suecicus | GB, VC64 Mid-west Yorkshire, Arthington | George Taylor | The British Museum | 19/7/1945 | BIRM |
| Potamogeton lucens | GB, VC61 South-east Yorkshire, Ulrome | George Taylor | The British Museum | 29/7/1945 | MANCH |