Can anyone identify?

Oxalis?

Certainly an Oxalis, which one is another matter. If it had tiny yellow flowers then it could be O cornuta, a terrrible weed. If it has reasonable sized pink flowers then it could be O. triangularis purpurea (not sure what its name is now, they have been changing them recently).

Woodsorrell, if you want the common name.

Wood Sorrel is Oxalis acetosella and has white/pale pink flowers.

I was thinking of Creeping woodsorrell, Oxalis corniculata atropurpurea, which has purplish foliage and yellow flowers. There are sooo many oxalis varieties...... Sorry!

Now that is also called Bermudan Buttercup which is really odd as it neither comes from Bermuda nor is it a buttercup!

Thanks very much for your help.