Here are some favourites, each in 140 characters or less.
- towerbridge is a brilliant feed of announcements each time Tower Bridge is lowered or raised.
- se1 covers the postcode area around London Bridge, Waterloo, Blackfriars, Borough & Bermondsey.
- Londonist is run by the eponymous website, covering culture, food+drink, etc.
- DowningStreet features all things related to the PM and his cohorts
- uktr_southeast is an unofficial feed of disruption to Southeastern Railway rail services
- and londontraffic does similar for road systems.
- bbcbreaking broadcasts the BBC's breaking news from around the UK
o yes, and
- theydid is our very own feed, covering SE21/SE24/SE27/SW2 and nearby arts etc.