Updated
Westminster Bridge is the spot every tourist walks across to get the best snap of Big Ben and the Houses of Parliament.
It's the shot on every postcard.
School children journey there in their hundreds.
There's a major Tube station nearby and often it's so busy you have to push your way through to get to the ABC's office just a few hundred metres away.
You never want to worry too much about a terrorist attack. But after the atrocities in Paris, Brussels, Nice and Berlin, I've never liked lingering there.
Am I shocked? Yes. Surprised? No.
It always felt like the easy, soft target, beloved of the cowardly terrorists who murder in a vain attempt to give their lives meaning.
In the wake of the latest attack the area is crawling with cops, some very heavily armed.
The security response was lightning fast and has been rightly praised — the area was locked down in minutes.
Police repeatedly warned this was coming. Their carefully prepared plans appear to have worked and they almost certainly saved many more lives.
Compared with some recent European attacks, some might see the death toll as quite low.
Indeed, London has lived through much worse assaults.
But I've posed with my family and friends so many times on the same spot where people were mercilessly run down.
As a resident, it's hard not to be particularly saddened by the horror of terrorism returning to Britain.
Topics: crime, terrorism, united-kingdom
First posted