This is crazy: looking on the Thames Water Works in your area page it says the following;
Low pressure & no water
Message last updated Monday 19 June 2017 - 09:49am.
We’re sorry to customers in the SE22, SE23 & SE26 area who are experiencing low pressure or no water this morning.
This is due to due to a burst water pipe on Lordship Lane
Our teams are on site working to repair the broken pipe.
We will provide a further update on our progress no later than 12:00hrs.
You can also get further updates by clicking on our twitter link: https://twitter.com/thameswater