Another light pollution petition

There is another light pollution petition on the UK PM's e-petitions website. Unlike the last one, this one is more concerned with all forms of outdoor lighting:

We the undersigned petition the Prime Minister to ensure that all exterior lights are shaded to direct their light downwards, so as to prevent light pollution obscuring the beauty of the night sky.

For those who live in our towns and cities, the night sky is filled with a dull orange glow punctuated only by the dim glimmer of an occasional bright star or planet. Fitting well designed shades on all exterior lights would stop light leaking wastfully upwards, restoring the glorious beauty of a star strewn sky overhead. Bring back the milky way!

Shame about some of the problems with the text of the petition, but it's got to be worth a signature if you're in the UK.