What is this???

I too inherited a lot of things on my allotment strawberries raspberries gooseberries Joy berries rhubarb and an artichoke oh yes an an apple tree ??

I love what you acquire with a new allotment. I also found a plant with arrow shaped leaves, looking decidedly suspicious but I dared to nibble it and thought it must be inedible as it was bitter. Turned out to be sorrel, which I now love!

Thank you all. They are not pleasant to eat (but maybe they would be ok for jam?) so now you mention it Elegran I think it could be something gone wild. It was growing in a path and I nearly pulled it up.

Possible wild raspberries, or tame ones gone wild. They grow in the woods near me. Smaller fruit than the ones in cultivation, and sharper tasting.

Loganberries?

Could they be tayberries?