Make Harmless Mischief

Yesterday we blogged about London's plaques. But sometimes the humble wall itself is the medium.
Here's a good example discovered in a North London playground…
Who would pen such a manifesto? We'd vote for 'em on the "make harmless mischief" pledge alone.
A London Walk costs £9 – £7 concession. To join a London Walk, simply meet your guide at the designated tube station at the appointed time. Details of all London Walks can be found at www.walks.com.