10 mins for a brisk walk ?
Probably more like 15. You'll have to allow time for negotiating the glorious set of roadworks on the roundabout.
Cheers think its easier for me to go to Southwark from the Wharf - then train from Waterloo East to Ladywell
you could get a bus-if you can find a bus stop! Agree Ladywell is nearer
I think the mainline train goes from Lewisham to Ladywell.