Frequently I refer to this site which gives a very comprehensive analysis of butterflies recorded in the county as well as being very informative about butterflies. many of which can be seen in parts of Britain.
Since the start of the century Wall butterflies have declined greatly in many parts of England and until 12 years ago there had been no records of them in the East Lothian area of south east Scotland.  Since then Walls have spread throughout the area mainly along the coast and can also be found in the Borders and south west Scotland.  The Wall is a UK Priority Species for conservation due to the continued loss of habitat and resulting drop in population but global warming has probably contributed to its spread into Scotland.  I have seen a few near the coast and today saw three about a mile from my home which is very close to the E L border which is why I often refer to the site. They like to bask in sun on walls or stony ground or places where there is short turf so it was relatively easy to get this before it flew away.  Meanwhile I am still looking for the common Peacocks, Red Admirals and Small Tortoiseshells which don’t seem very common here just now and apart from the Whites, the most common here now are the Speckled Woods which were first recorded in E L as recently as 2009.