Hello,
The final one I can plan at the moment.
Meeting pointFor this walk meet outside Canary Wharf Underground station on the concourse @10:30?
We would then walk around the West side of the Isle of Dogs:

There are a few nice pubs/restaurants en-route. Ending at Island Gardens allows you to take the DLR north to Canary Wharf or South to Lewisham to make your journey home.
It is high tide at 12:08 PM on this date, so no foreshore/beach access.