On May 25, 10:38*am, CJB wrote:
Is Haggerston really to the north of Dalston? Or have they made a
mistake? I think signs at other nearby stations may be the same.

http://www.flickr.com/photos/50503868@N03/4637990759/

The sign doesn't actually claim any direction is north (it's you who's
drawn on the "N") - the sign is a diagramattic representation of the
ELL, and of the NLL with which there is interchange at Dalston. The
sign shows that one can travel north from Haggerston and change at
Dalston onto the NLL. (This will all make more sense when the ELL
extension from Dalston Jn to Highbury & Islington via Canonbury opens
next year.)

Haggerston is of course due south from Dalston, just down Kingsland
Road.