Apologies if this has been discussed previously, but I'm just curious about how the Jubilee Line will cope with additional passengers getting on at Canada Water once the East London Line extension is opened.

Right now JL trains are completely rammed full during rush hour at London Bridge, to the extent that at the peak you can wait for the next train to get near the front of the queue (aka surging mob). If the DLR stops working then basically forget it ... go west a few stations then switch back.

Since no-one gets off at Bermondsey, at Canada Water you basically have no additional capacity. How will it cope with an extra few thousand people disgorged from the East London?