is this a weed

can you tell me if this is aweed or not thanks all

 

My guess Oxalis acetosella

 

thanks but would you say its a weed

 

I don't know to be honest it was a guess, if you like it leave it if you don't like it dig it up, this link might help.
Google

 

Wonder if @Zigs could identify it?

 

I'd go with Oxalis too

 

With the white petals and shape of leaves, have to agree with @martin-f's ID Oxalis acetosella

It seems to not be regarded as problematic, unlike other Oxalis species (debilis and particularly that damn corniculata stuff ). Such a dainty, stunning little plant that's a devious minx, especially in it's darker form.

If it's a large clump or a few small well behaved patches, would be worth keeping but if it's anything like the two variants of O. corniculataif and it's growing between practically every plant in your borders, in cracks in pavements and every nook and cranny in between, it may be a weed....but only you can decide