Do not...

...chain bicycles to these railings.

Whoops! (Spotted in Bristol today).

Sorry - I had to change the Blip for today. Somehow, yesterdays blip got posted to today's date (back blipped it from an iPad this morning and it somehow transmitted today's date rather than the the original date in the exif data - I didn't spot it). So the first few comments below actually relate to yesterday's blip. Confused? I am.