We saw 20+ of these delightful creatures at Harrold-Odell Country Park on a busy Sunday. Most didn't pose in a favourable spot, though.
No interactions present.
Lat/Lng: 52.2014, -0.5973
OS grid ref: SP959568
Country Park in Bedfordshire with water bodies, including the River Great Ouse, and a wooded, marshy wildlife sanctuary.