Yes, my snow studs were also a bit pointless for my commute yesterday. I had a little slush on the way in, but by the time I cycled home last night, it wasn't all that cold, and virtually all the snow had gone. There was a little snow on the grass around the commons, but nothing significant, and nowt on the cycle paths themselves.
I think I need to pump the tyres up as hard as possible, they were at about 60psi yesterday, and still noticeably hard work, although the weight of Vince also doesn't exactly help.
I tram/train/tube-d in today, because I needed to pick up a parcel from East Croydon, so it was easier and faster to just continue in on the train then. Back onto Vince tomorrow.