Puncture!

And, as is always the way they're only discovered when you want to get on your bike to go home.

I know it doesn't look too flat in this picture but it was, trust me! I think however on closer inspection a new tyre is needed too but it's done well and carried me for many thousands of miles too and fro.

Ps I know, the bike's filthy, it's a working bike so doesn't get much TLC. A wash at Christmas and a Rohloff oil change are as good as it gets, poor thing!