There were queues waiting for griddle-cooked hamburgers, a group of girls in neat blue uniforms selling Gauloises at a stall, a girl brushing her teeth at another tap, this one with a soak-away beneath it. I joined a group laid out in the shade of an oak tree and stood with my arms stretched out to cool down. A man passed me in tight peacock-blue trousers, a cream top, lime-green socks, carrying a pair of bright yellow boots. I took some photographs and read the printed T-shirts - ‘Status Quo’, ‘Sunday Times Classified’, ‘Thin Lizzy’ and, foretaste of things to come - ‘Led Bloody Zeppelin That's Who’.