unidentified yellow fruit and purple plant

[Vipera]

Hi, could anyone help id these, first is a yellow fruit growing on a tree next to our allotment site, i think its a yellow cherry, is it edible, i hope so because theres lots of them!
I have taken photos of the fruit and leaves.
Secondly is a plant that reminds me of a orchid (although it isnt a orchid) its growing in a area i can only describe as occasioanly marshy, its near a small river and himalyan balsam grows there (although its all been cut down) grass snakes and slow worms are found in that area to, and damselflies, i dont think that info will help in the id but maybe it describes the kind of area that the plant grows in









Thanks
Jay