Most likely sparrowhawk, but could also be a peregrine. In my experience the peregrine grabs a pigeon on the wing and takes it somewhere up high to eat, and the scuffles are more sparrowhawk -like, with eating nearer to the ground.
I remember a few years ago I was sitting outside Canterbury Cathedral and noticed the occasional feather drifting down from above. I eventually traced the source back to a peregrine right at the top of the crossing tower, about 70 metres up, plucking a pigeon.
Most likely sparrowhawk, but could also be a peregrine. In my experience the peregrine grabs a pigeon on the wing and takes it somewhere up high to eat, and the scuffles are more sparrowhawk -like, with eating nearer to the ground.