Milvus milvus (Red Kite)
Discussion
I want to make sure if they all are Common Buzzard feathers.
Val
Lovely! However, not all of them are from buzzards.
Second and third one from the top are from eurasian sparrowhawks, (a female and a juvenile male) and the first one from the top row is from a red kite (milvus milvus)

Val
Good to know i helped you discover something new! We rarely get buzzards here in town so i only find sparrowhawk and scops owl feathers. You’re so lucky to live in an area full of raptors..!