Had another appointment with the physio last night. My knee has improved no end over the last few days.
He's given me a rather curious exercise to do, involving standing on one leg (the bad one) and pulling on a piece of rubber tied to a door handle. I'm sure it would look very strange if someone saw me doing it.
I've also got to do more walking as a build up to next Thursday when I can give running a try!
Just a W1R1 run but it's a start at least, and if it goes well and the knee holds up I'll hopefully be able to properly get back into the swing of things.