Having worked in Canary Wharf for some years, I was fortunate to be moved to an office in Park St (close by the Globe). With the Southern strikes I recently dog-legged via Canada Water and it is a much busier place. Really its a clear and present danger to use the sole escalator, its one person's trip away from a bad situation.

I would recommend using the escalator up to ticket office and go down the escalator there - just for pure H&S reasons. It is a very difficult interchange to get an extra escalator in, and not aware of any changes planned.