Aargh! Another mural damaged

The three-panel portrait of Brockley on the back of the MOT garage on Coulgate Street has been damaged and a portion of the central image has been blacked-out.

Last year, the Jimi Hendrix mural was painted-over in similar fashion.

Presumably, the work was defaced in some way and some well-meaning person has painted over the problem with black, but in doing-so, they have made the problem far worse than it would have been. Does anyone know the details?

This is our favourite piece of public art in Brockley and it's a tragedy that it's been damaged.