Last weekend in Barnes I was lucky to encounter a pair of Peregrines taking flight across the main lake. Although I see these on a regular basis this was the best view I have experienced of these superb falcons. I suspect they had just fed as their flight was very slow; there was no menacing intent to their presence, which all the other birds seemed to sense. Only the Lapwings took to the air while the ducks and gulls were only slightly perturbed by their appearance.
The pair briefly settled on one of the islands, showing the size difference between male (left) and female:
One of the Lapwings which took flight:
Black-headed Gulls feeding: