"Christian McArdle" wrote
Washing flags is not explicitly banned, so you wouldn't be
prosecuted.
It's a question of conscience.

Indeed. I've put off laying a lawn for over a year due to water
shortage, even though the hosepipe ban has only just come in. Given
that things don't seem to be changing, we're now considering laying
plastic grass!

If my Other Half wasn't so protective about his blessed lawns, I'd have
clover instead of grass for our front lawn. It faces north and is over
such rubbishy, stony soil that it's either thick with moss when shaded
in winter or dried out to a crisp in a hot summer spell. Clover seems to
stay green whatever the weather - you can mow it less often, forget the
weed and feed and scarifying, and have the bonus of red and/or white
fowers. Seems logical to me, but will he even entertain the idea? Not a
chance. :-/

--
Sue