If you are in London tomorrow, then you need to know it is London Marathon day.
The race starts in south east London, runs across the river, round the docks and docklands areas and along the Embankment, finishing on The Mall near Buckingham Palace.
https://www.tcslondonmarathon.com/the-event/the-course
If you are interested, there are plenty of places to watch.
Even if you are not be aware that:
- there will be a lot of people out on the streets
- crime will be at an all time high, so take only what you need and be extra careful
- travel will be difficult at best, with stations closed, restricted access and other regulations, and not just on the route
- the event lasts all day
- roads will be closed
- bus routes will be severely affected, shortened, diverted or just not running, and will be busy
Plan your day in advance and be aware that London will not be its usual, quiet self.