The Jubilee line twitter feed says it was due to "absence of staff" but it's reopened again now. There was no mention of any problems at North Greenwich while I was at Canary Wharf (heading west) early afternoon.
The essential things in life are seen not with the eyes, but with the heart. --Antoine de St. Exupery
At present trains are non stopping at NG due to damage I'm assuming.
As the post below suggests, NG was closed briefly last night because of a staffing issue. They closed a couple of minutes after my train departed and were open again by the time I got up to Wembley Park
A bit premature maybe! We have had periods of heightened security many times in the past.
Without going to politics, I do not know if we ever saw such levels of heightened security before 7/7. This could affect the community because if enthusiasts end up in the wrong side too often then other cities stand to gain from London’s excessive paranoia.