I have no idea who did this. You are geniuses, and I salute you. One of the most brilliant acts of urban humour to have been seen in the Wood for a long time. Bravo! The image has been kindly supplied by Godfrey Hucker for which I thank him profusely.
No doubt the Express & Star will be in on the case. To help out whichever poor hack gets sent out, Walsall Wood is between Walsall and Lichfield on the A461. Bring your bulletproof vest.
Catch of the day. Hat tip to whoever is responsible for this work of mischief - well done! Image kindly supplied by Godfrey Hucker who of course, retains copyright.