Peacock Butterfly on Buddleia

I have several Buddleia bushes in my garden and at this time of year I know why I planted them, butterflies everywhere, especially now the sun has been shining.
I spotted this Peacock fluttering from flower head to flower head, and eventually, after several attempts, managed to get this lovely sharp image.
Photography can be a trial at times, but the results are often worth the effort,