If you want to watch an action film from London, then Survivor is a film with Pierce Brosnan which can now be seen on Netflix in lots of different regions and nations.
In the film we can watch Milla Jovović who works as a kind of investigator who checks up on people who apply for a VISA. One day she finds someone suspicious, but higher powers do not want her to snoop around, and this leads to explosions, hunting and much more. Pierce Brosnan is playing the guy who is out there to get her out of the way and in the heart of London you can see explosions and lots of other action scenes.
Kate Abbott, which is the name of the character played by Milla Jovović, is suddenly the one suspected for the crimes and she runs around in London trying to stay safe, while at the same time trying to solve the problem and the mysteries around what is happening.
If you want to watch this London film with Pierce Brosnan and Milla Jovovic online, then just watch it on Netflix. You can read more about how to watch Netflix from abroad at the linked site.
Below you can see some pictures from the film showing the London scenes as you see London Eye, the Parliament and some other panorama views.