Tortoiseshell Butterfly

Spent most of the day howking out the docks that are invading the bottom of my garden  -  my Goodness, their roots must go right through to Australia if you ask me.  Only saw white butterflies out in the open but this Tortoiseshell had taken shelter in the Garden Shed.  Fluttering about a bit so not very sharp, but I think it looks very colourful. Very few of them about this year so far, so must be blipped!