I was strolling along this beautiful stretch of the foreshore by Putney Bridge taking lots of photographs. The sun was shining, it was really nice.
Then two plain clothes policeman walked down from the road and demanded to know why I was acting suspiciously.
I asked them what they were talking about, how is taking pictures of the riverbank suspicious.
I was feeling quite worried, how could I prove I was not suspicious. Was denying that I was suspicious in itself suspicious.
They left after a while, but it completely spoiled my day.