Forty years ago when Michael Eavis, the septuagenarian dairy farmer, held the first ever Glastonbury festival on the fields of Worthy Farm in Somerset, he never dreamed that one day revellers would be wearing Christian Louboutin wellies and getting a Hollywood-style spray tans in £7,000 (€8,623) air-conditioned yurts.

A far cry from the greasy hippies and filthy loos with which the annual music festival has traditionally been associated , this year's celebration, which took place last weekend, had a distinct whiff of luxury to it.