This 2015 video is called From caterpillar to peacock butterfly.
From Wildlife Extra:
World’s biggest ever butterfly count reveals Britain’s top ten
August 2010. The main results of the UK’s first ever big butterfly count, based on a staggering 187,000 individual sightings, have revealed good news for small tortoiseshell and gatekeeper butterflies.
Zebra Ringlet: Little brown butterfly forgotten for a 100 years is a new species: here.
Sightings are still coming in, but the main results of the big butterfly count are already clear. From 24 July – 1 August 2010, the top ten most common species were the Small White, Large White, Gatekeeper, Meadow Brown, Common Blue, Peacock, Green-veined White, Red Admiral, Small Tortoiseshell and the Ringlet.
Black-and-White Butterflies Show Their True Colors: here.