I'm guessing some kind of Hawker dragonfly, but I can't be sure.

Dinton Pastures, nr. Reading, UK

Kind of absurdly photoed with a Canon R5 MkII + RF200-800 - but there were two of them with rather predictable pathing, and going close to reeds allowing focus to be preset. 1/1250s speed which says something about their wing speed as well.