Sparrowhawk over Streatham Norwood Grove yesterday

I had a very clear view of a male Sparrowhawk over Streatham Norwood Grove yesterday, it looked like he was hunting swifts, or at least flying quite aggressively around them, below, the cafe on Tooting Bec Common, below that a picture I did 14 years ago after going to Tokyo, I forgot about it completely as it's in a house I used to live in back then.