Thanks to Martin Deutsch for spotting this poster at Hounslow West about the extended London Underground Piccadilly line to support the 5th Terminal at Heathrow (actually the poster is just about as clear as my previous sentence - but I hope you know what I mean).
I don't envy map and sign makers, but I can see more than a few people - tourists and locals alike - scratching their heads at this one. For me, it's the plethora of arrows that are causing the problems with this sign - by trying to be clear, they just end up going into directional frenzy.
Speaking of Terminal 5, Pete a regular commenter on this blog emailed me to say: "I've just discovered the 'trials' taking place at Heathrow Terminal 5 in advance of it opening for real in late March. Basically you turn up with a bag and a passport and simulate getting on a flight to some fantasy destination to test their systems and procedures...."
We're not sure if it means testing the Piccadilly Line from Terminal 5 as well. Anyway, it looks like places are still open. So if you want want the chance to be a "guinea pig" (with free Terminal 5 goodies) sign up here.