Small white I think?

Chasing butterflies round the garden again!
Just get the camera focused and off they go!
This one was on the oregano, which is now in flower, and the bees and butterflies seem to love it.
I think it is a small white, but I'm sure someone will let me know if I am wrong!

It is very muggy at the moment.
The sort of weather I don't like, but hey I'm not complaining!!
So much better than last year!