It is a warm but windy evening in East Sussex and we are on the hunt for glow worms.

As the sun sets on the Benfield Hill Nature Reserve, just outside Hove, a distinct green glimmer starts to flicker in the chalk grasslands.

This site is hailed as a "stronghold" for glow worms in Sussex and with the insects' summer breeding season well under way, conservationists say they have spotted 60 glowing females on one evening at the reserve.