I feel for you all commuting in London - I lived there for a year and felt so claustrophobic, although it was nice having everything so close.
I commute an hour each way by car now, but have just been signed off work for the rest of this week as driving in rush hour traffic is making my SPD flare up. I have a physio appointment for Thurs morning, but am in total agony at the moment. I actually cried all the way home yesterday which is very unlike me, so it must be bad.
My manager is being really lovely though, and seemed happy with my suggestion that I might need to work from home a few days a week from now on so I'm not commuting every day 