Anyway, it would seem that at least some of London's citizens aren't expecting a speedy resolution to the labour dispute, and have repurposed some things accordingly...
I saw that sign at Wavell and Edmonton, which is kind of near Clarke Road Secondary school. The cat's name is Pixel. I am reluctant to post somebody else's phone number on the Internet, so if you've seen him, send me an email and I'll give you contact info for the owner.
If it weren't for the strike, I would have thought positioning your missing cat picture like that could be a bad omen... R A N T W I C K