Can anyone recommend an up to date list of plant orders, families and genera for the UK?
Stace, 2010, The New Flora of the British Isles, Cambridge University Press.
...at www.theplantlist.org , might be what you are looking for.
... is global, not UK-specific, and is of variable quality. (I assume that the monocots, based on a recent Kew project, are good, but Malvaceae, for example, had a lot of errors last time I looked.)
... (for example a new monkeyflower - Mimulus peregrinus (IIRC) from the Leadhills area was described recently), but there's a list at http://www.thewildflowersociety.com/wfs_list_of_all_plants/main_menu_201...
Neither Stace, nor the NHM list, is up to date with taxonomic changes, but they differ in where they are out of date.
Thanks this is a good list, it's hard to keep up to date but this seems the best