I'm sure someone can, but we need a photo please!
I can't even think of a rose that flowers that early! What is it?
I agree, on looking again it is Yellow Bird's Nest. Although it does grow in Britain, I've never seen it.
It is Lathraea squamaria, I'm sure of it. This is some from my local wood.
Definitely a tree seedling or sucker, possibly a cherry?
That's Greater Celandine, not Lesser, by the way
It is rather invasive and has taken over road verges in many places. I wouldn't want it in my garden, but some people do like it. Pull it out if you don't want it either!
I think it's a Chenopodium too, although I wouldn't like to go to species from the photos.
That's exactly what I did, Edd - must have found the same website! But they were too hot in the greenhouse and are now sad, dry brown crisps.
It's Field Horsetail, Equisetum arvense. It's hard to eradicate, the best way seems to be trampling well to bruise the foliage then applying a glyphosate-based weedkiller. No doubt you'll get lots more suggestions.
The names are synonyms, Stachys byzantina is the current one. I love to touch the leaves, must show my granddaughter next week!