I was thinking about doing it back, the reverse route, but no-one I talked to took it seriously, and I wasn't that motivated anyway.
But I was thinking, next time maybe organise a hardcore who cycle back, but do it the opposite way round (so doing the bridges in the same direction, but doing the banks on the other side, so Kew -> Chiswick south side, Chiswick to Barnes north side etc.)
I would be.