Predawn sky

Whilst on the foot bridge long before dawn, watching this new day evolving in such a magical way, I  had no idea of the horrific events that were to unfold on Westminster Bridge this afternoon. 
My thoughts and prayers go out to the victims of this brutal attack, their friends and families, and to the members of our emergency services and police who, as is so typical of them, acted with alacrity, efficiency and courage.
A very sad day for London.