To Ride Or Not To Ride? Slippy Snow Commute?

I've ridden 7 miles each way (South to Central) every day since Friday and it's been fine. The only hairy bit is riding across Clapham Common which hasn't been gritted. The snow on the paths has been compacted, melted and refrozen to a one-inch ice death sheet so I've been walking through that bit. Today I was faster doing that than another bloke who was doing a foot of wobbly cycling at a time before putting his foot down.

It's not even that cold.

What was Clapham like today? Thawed or still a rink? I avoided that route as I couldn't be arsed to deal with the ice there...