Suddenly I have a lot of what I thought was purple clover in my borders and beds. I've looked online and it appears to be Oxalis corniculata (creeping wood sorrel) as it has yellow flowers. I've been hoeing it with other weeds but wondered if I should just let it be as it's quite attractive although it's not really the right colour for my pink and purple beds. I also note it can be quite invasive so I may be better getting rid.
I've never noticed it in the garden before and wonder if it might have come in on the topsoil the the landscapers used when they redid my garden.