A few items to comment on.
Firstly, Ian, yes that is a Cranefly. I suspect Tipula oleracea which is a rather early species that peaks around May and June. Not sure about those early stage caterpillars. My first thought was Peacock Butterfly, but looking at those egg cases I also wonder about the early form of Emperor Moth caterpillar.
Nat, an interesting shot of a feeding damselfly. As you said, if you disturb a damsel just stay still and the chances are that it will return for a closer look at the strange beast which disturbed it!
On the other hand, I found a Beautiful Demoiselle damselfly today. It was sitting in the hedge watching me while I removed the kit from my backpack and assembled it together, camera, lens, flash, tripod. And immediately I was ready for action - it flew away. I'm sure I could hear it giggling.
I did photograph one a couple of days ago but it isn't quite as I would wish as there are a couple of grass stalks in front of the insect.
Yes, manual focus usually works best. Auto focus often gives false focus problems by focusing on the background. In fact, with the shallow focus of macro lenses auto focusing on the tail when you actually want the eyes sharp is also a frequent problem.
For in the wild shots, where approachable distance is usually the constraining factor, I normally use a 180 mm macro lens plus a 1.4x converter. But for 'studio work' where I can get closer I often substitute a 25 mm extension tube for the converter.
And Peter's damselfly certainly looks like a typical form of a male Large Red Damselfly.