Really sad that there's so little evidence of the station itself. Don't go wandering round the site alone - there's a ton of used needles and other smackhead paraphenalia, it's a bit of a chav hangout.
I've got a couple of photos up, if they're any use!Haymarket Tunnel Monks Tunnel:
PS: If you're interested in an, ahem, 'unguided tour'...I think the Dock Branch is still technically under possession of Network Rail, meaning trespass is a criminal offence rather than civil. I very much
doubt it'd ever be an issue, but worth mentioning all the same! It's not as though they could actually run a train along it...