Yew Berry.

Had to return the beekeeping stuff that I'd borrowed from Newbattle, so took the dogs for a walk there. The woods surrounding the abbey have so many blipping opportunities - particularly at this time of the year.

I was wondering about the toxicity of these berries, after all, fruit are meant to be eaten as part of the seed dispersal strategy. A quick Google revealed that the flesh is (reputedly) nutritious - it's the seed (and all the rest of the plant) that's toxic. So, they're safe for humans to eat, provided that you don't chew. This makes sense as they are the size that a blackbird would take - and birds don't chew.
However, I would still advise against trying this at home