Spotted...

Massive chain FAIL a couple of yards in front of me, some poor roadenger looked like he hit an invisible wall of unmoveability, came a right cropper, SPDs failed and even heard him swear before he hit the deck. Was a decent enough looking bike/chainset, was going up an incline so must have put in just that little bit too much effort.

Err, if the 'roadenger' in question was on a blue bike with white saddle and drops, it was me (Singlespeed btw!). What a f*cking morning. Chain came right off going into the incline getting over Lambeth Bridge; no time to unclip so just pushed meself to the left to avoid any traffic on the right. Chain tension FAIL.