Re Panic at Waterloo station
There is also an incident at Bank Station nr London Bridge.
The two stations are close together so the incidents might be linked.
https://www.express.co.uk/news/uk/1161157/waterloo-station-jubilee-line-police-london-news
https://www.express.co.uk/news/uk/1160873/london-news-bank-station-emergency-london-underground-police-incident