My best guesses for now are:

1. Eurasian goshawk
2. Merlin

They look similar to the ones i spotted in terms of colour, and the calls would also fit. I guess I would need a third meet-up to have a final answer but learnt so much about birds in the meantime ahah

Thank you @doubtingtammy @takeheart for the lists, they were very useful :)

@Jerb322 it could be!

@TrojanRoomCoffeePot it did look a bit similar in colours and shape, but I’m reading they hunt fish so I would exclude it for now🧐