Spotted...

Morning sir!

Whereabouts were you?

(I don't have the legs to run into work- the pain I'm sure I'd be in when I arrived puts me off anyway.)

I was on the section, just after the park (on our left), as you come to the first set of light before the tube station. You both passed me by the park and then just as I went across the crossroads the lights went green and away you went. I recognised your bike, but I couldnt figure it out. Will try and look out for you on my ride, similar sort of time.

Just build up to it slowly, you would be fine in no time. If you ever want to join me, just let me know.