Lots of different birds, especially wood pigeons, unfortunately. Noisy clumsy great oafs.
Rabbits - thankfully rarely in the garden these days since better fencing installed.
Hedgehogs. Current dog is a wuss, doesn't know what they are and just barks at them. Previous dog (JRT) used to bring them into the house, blood all over him (his own). His sidekick (greyhound) preferred to try and open them with her paws, which led to her gouging huge pits in the lawn. Hedgehogs invariably win all these encounters.
Mice - they get on the bird feeders. Recently tried to set up home indoors, but we think they have been successfully ousted.
Rats, obviously, but rarely seen.
Moles, ditto.
Occasional grey squirrel.
Went out with dog the other day on to path accessed from garden. I noticed a roe deer in the adjacent hayfield. I passed the field and turned into the lane at the bottom. In the distance was a dude on a bike coming towards me. My dog chases bikes, so I was rooting around in my bag for the lead when the deer leapt over the fence just to my left, clocked the dude on the bike, turned in my direction, clocked me, and leapt over the fence on the other side of the path into a barley field. That doesn't happen often!