I too send my prayers and condolences in the wake of this new tragedy. If you have a connection to London, I hope and pray you everyone you know and love is okay. What a terrible thing to happen...I just can't understand it.
I also have family working in London, but thankfully they are all okay. I have a friend on holidays there with her mother and haven't yet heard how they are.
Nina, Victoria, Australia, still a British subject.