Moths get a really bad name, but I think they easily rival our butterflies for beauty and certainly for diversity (and for difficulty of identification - although the next few are easy enough).
This is the Small Magpie - Eurrhypara hortulata, which feeds primarily on Nettle:
The Cinnabar moth - Tyria jacobaea - is one of the most readily identifiable moths and is dependant on Ragwort:
A word about Ragwort: Ragwort is often blamed for the deaths of horses and cattle. I have spoken to many local farmers and they are unanimous that all animals will avoid eating Ragwort if it is left to grow. If the plant is pulled from the ground and left to 'sweeten', then animals can't differentiate it from hay and will eat it. That's when deaths occur. Leave Ragwort alone and it won't cause problems to animals, and will continue to nurture insects such as moths, hoverflies and bees.
The Brimstone Moth - Opisthograptis luteolata - has a fascinating life-cycle which enables it to adapt to varying winter conditions. Sometimes it overwinters as a larva; at other times as a pupa, the emergence date being governed by the type of overwintering strategy. It can be found as an adult from April to October, with some evidence for three generations over 2 years. Foodplants are shrubs and bushes such as Hawthorn and Blackthorn.
The most frequent leaf-miner on my patch is the micromoth Stigmella aurella, which makes leaf-mines on Bramble (and occasionally, on Meadowsweet). This is the (3mm!) adult:
Tachinid flies are parasitic on moth and butterfly larvae. This one became lunch for a Dung Fly. It's tough out there.