32/15 proved to be just a leetle too high, in the mud, and I couldn’t quite make The Wall one time, and everyone laughed at me in a cruel and heartless manner. For my local trails, in Epping Forest, it was perfect, as it was the best compromise between speed for the road bit, and traction on the off road bits. I shall be reinstalling it, come the (hopefully) drier months.
SS is ideal in winter! Keeps you warm, and easier to clean.
The London ride will happen, but not for a it. It’s more a stoppy-starty enjoy the view type of ride, so not good in the freezing cold. Possibly early March, when there always seems to be a mini-heatwave for a week or so. Not really involving many busy roads,either. Will be fun, though!