On 29 Apr, 18:10, Mr Thant
wrote:
On 29 Apr, 18:01, MIG wrote:

Yes, there's one near the bottom of the stairs from the Northern Line
platforms.

Sorry, I meant to ask about the arrivals platform. There's not a
second DLR validator, is there?

Ah, no; don't think so. I can picture two in the DLR part of the
station, but think logically that there must be a third.

That is, there must be one in each of the middle passageways at the
bottom of both sets of Escalators (to Central and District lines
respectively) and the one at the bottom of the Northern Line stairs.
I can't actually picture one at the Monument escalators, but think it
would have to be there.