It looks like Lesser Celandine, but the leaves don't usually appear until February then die in late April/May. If it is, then, although the yellow flowers are pretty, it can become a bit of a pest when growing in borders with other spring flowers and it's hard to get rid of.
Dordogne and Norfolk. Clay in Dordogne, sandy in Norfolk.
Thanks everyone. So I'm going with either asarum or pennywort at the moment. I will leave it for now and let it grow, unless it starts outcompeting the fairy rose next to it.
Not sure what plant is but it is not Umbilicus rupestris....common name Navelwort or Pennywort. The leaves of this are round with a stalk in the centre...like an umbrella.
It looks like Caltha palustris but I don't think that would just 'appear'. Hmmm.
I do agree with @Loxley, the leaves do look like the leaves of Marsh marigold, Caltha palustris. The leaves of my plants look exactly the same. But the big question is, if it is Marsh marigold, how did it get there? The plants do self-seed but not widely, just in the immediate surroundings and mainly just into wet soil. The other option is Centella asiatica, but I have never seen this here in the UK so far as well.
I don`t think it is Asarum europaeum as it has a different leaf venation.
Posts
When you don't even know who's in the team
S.Yorkshire/Derbyshire border
The leaves of this are round with a stalk in the centre...like an umbrella.
this is another type.
Not certain but that appears to look like Centella asiatica. ....Indian pennywort and Asiatic pennywort
Not something i have seen in UK. .
https://en.wikipedia.org/wiki/Centella_asiatica