If you and the smokers truly believe this, why be furtive about it and sneak off to the bogs? Very reminiscent of the bike sheds when people were 12. Why not just light up in the stand, have a couple on the bus and/or tram and finish off smoking 10 in the pub? Because it's not allowed, that's why. If you accept the last point, that is, it's not allowed, then there is no argument to be had, unless you advocate that the law only applies in certain places? In that case it would seem the law applies everywhere in England, except for a very small part of some lavatories and a bit of spiral walkway in Manchester and that sounds a bit unlikely.