Here's another flower I photographed in Somerset. It was very thin and I unfortunately overexposed it a bit. Would someone please be able to identify this one for me? Many thanks, Maedin T.
Indeed! M. betonicifolia, I think. Thank you so much (I never ever ever would have been able to get that!).
I checked the species identification of this Meconopsis with The Meconopsis Group (http://www.meconopsis.org/pages/index.html) and I have been very kindly informed that this flower is M. 'Lingholm' (not M. betonicifolia!).