“Think of all those sets scrapped at the end of a run. Think of the hotel nights and minibus miles generated by companies on tour. Consider the audiences travelling into town. What of the paper for the flyers, posters, programmes and scripts? Then there are the stars – Don Johnson, Jessica Lange – who jet in from the US to see their names in high-wattage West End lights. Should we wonder at the scarcity of green-themed plays, when the theatre business itself has such a voracious appetite for resources?”