Hi Leif
I guess your probably familiar with the UK Butterflies web site which lists loads of good places all over the country and what you might see there but just in case you aren't here's a link:
http://www.ukbutterflies.co.uk/sites...TL&species=All
Incidently thanks for your comment on my Silver washed fritillarys - no I haven't got a huge butterfly suit

. On that morning there were literally dozens of silver washed in every ride but getting close wasn't easy.
Although I long for a DSLR I find with easily spooked insects that firstly you need to get down low and not loom over them but also using a compact I can hold it at arms length, frame the shot in the LCD and fire it with
an 18" manual shutter release. For that particular shot I was about 2ft away but the camera was less than 6inches.