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Thanks very much for the ID, it doesnt come as a massive surprise for it to be Satyr Pug, I've seen the adult a few times in the same area some years back. If I recall correctly it was in June/early July but I'm sure the species has a larger flight period than this. Its a surprisingly big larva for such a small adult but I am sure you are totally correct. There didnt seem to be many pink species to choose from and I am not familiar with pug moth larvae at all.
My commentary above would imply that Peter only knew it was a scabious of some sort. He IDed the plant as Devils-bit Scabious when I asked him what it was and I forgot it all except the word scabious, at the time of posting.
Lat/Lng: 55.023, -6.058
OS grid ref: NW407773