Members of the RMT Union have announced a strike on the DLR (only) next Tuesday and Wednesday- November 7 and 8.
If it goes ahead it will close the DLR network. All other modes of transport will work as normal but will be busier.
For the visitor this is most likely to affect trips to Greenwich- use Thames Clipper/Uber boats, South Eastern main line services, London Overground, the Elizabeth Line or bus #188 from Central London.
https://www.ianvisits.co.uk/articles/strike-on-the-docklands-light-railway-dlr-next-week-66956/