Aaand it's in the bag! I went a different way this time - south to the Isle of Dogs, overlooking the Dome, then along Marsh Wall to connect with the river by Canary Wharf. It was a beautiful sunny day, with sparkling light on the water, which really helped.
I didn't let myself think about getting started - I just trusted Laura to tell me when to go, then got on with it. As I was plodding along, I tried to concentrate on having an upright, relaxed posture, and also had a good look at everything around me so I didn't think too much about "OMG - I'm running!". (Well, I say "running" - I caught sight of myself in a window as I trundled past, and my running action is a bit like those slightly rubbish Japanese robots )
I was a bit stunned as I reached the riverside - I must have looked slightly odd as I wandered along thinking "I've done it!" But I'm soooo glad I've got this one squared away.
P.S. That scary monster in the picture? Now turned into the world's most elaborate handbag ...