In the valley bottom I came across (or rather it came across me) a very large, very noisy hornet. Unfortunately it wouldn't pose for a photo and when it did land it immediately crawled under dry leaves out of sight.
I found a number of specimens of Ground-ivy Gall. This is caused by the gall wasp Liposthenus latriellei. I also found some orange rust fungus growing on Common Nettle and also on Salad Burnet.
Ground-ivy Gall caused by the gall wasp Liposthenus latriellei
Nettle Rust Puccinia caricina
Salad Burnet Rust Phragmidium sanguisorbae