London is an international city. People from all over the world come to London. These have obviously come from Hollywood.
There are lots of things to do. For instance you can visit Madame Tussauds and look at some of the Live models.
If you are on a Bargain Hunt, you can visit places like this and for instance get a yellow bicycle,
or a couple of hundred old sewing machines.
But whatever you do, don't try to climb the wall of the Russian Embassy - even an old leaf can't get over.
And there is always a friendly pub where you can relax when your legs get too tired.
Have a nice Week-End!