Alners Gorse through the main gate ,go down the track, at the bottom of the hill just past where you saw the brown hairstreak turn left and along that hedge there are bramlbe bushes that is where you will find white letter and purple hair streaks .

We live close to Alners Gorse. I saw your photo of the brown hairstreak and went to have a look in the evening. I didn't see one but saw 4 white letter hairstreaks and 4 purple hairstreaks. The white letters are always in the same stretch of hedge when I see them.Where was the brown hairstreak?