This is a tale of two murals: one painted on the side of a building in Greenwich by an artist commissioned by the owner, the other scrawled on a building in Finsbury Park by a fly-by-night graffiti artist. You can probably guess which one the local authority has ordered to be removed under threat of enforcement action and a large fine, and which one has been welcomed by the local MP Jeremy Corbyn, who said he was ‘delighted’.