Winter Training in RP, Saturdays

No. It was actually the Calshot gearing - 82. I was riding around town, I completely forgot I had changed the gear, and I thought it felt a bit heavy Then getting up West Hill, I had to stand at the end which I don't normally do, so I figured I was just a bit tired. When I got home, thats when I realised.

My knee didn't hurt at the time. Just the next evening on the way home. I could not put any pressure on the left pedal at at all as the pain in my knee was really bad. So I effectively rode homw with just my right leg.

So you think it may have just been overdoing it up the hill? Its not something I will be making a habit of

It sounds like it. I did something similar once and the pain only came a day or so after. Rest it for a day or two and see how it goes.