Nice pic pip, not seen many all summer or Painted Ladies, now there are mainly Admirals and Peacocks.
Sedum have such amazing flowers....seems to take forever to come along but when it does you forget all about the wait
It is indeed a sedum. divided many times over the years. Not a great many butterflies this year, small coppers, speckled wood, red admiral, peacocks, tortoiseshell and the ubiquitous cabbage white are the only species I have had in the garden. Thanks all for the comments.