Butlin's closed its Filey and Clacton camps in 1983, and that is the year the British holiday camp stopped being a national default and became a thing that people remembered. Billy Butlin had opened the first camp at Skegness in 1936 with the slogan Our true intent is all for your delight. At its peak Pontins ran around thirty camps, Butlin's ran the largest sites, Warner's operated a second-tier circuit, and Ladbrokes had bought up older sites including Caister-on-Sea, which had been operating since 1906 and is sometimes credited as the first camp of all. The whole apparatus assumed that an industrial family with a fortnight off in August would drive to a fenced site on the east or north-west coast and stay inside the fence for the whole fortnight, eating in the dining hall, queueing for the heated outdoor pool, listening to the Redcoats announce the children's talent contest on the tannoy at half past two.

What killed it was Spain. The package-holiday industry had been gestating since the 1950s, but the things that made it mass-market arrived together in the late 1960s and early 1970s: bigger and faster charter aircraft, the easing of the post-war currency-export limits, Franco's industrial-scale construction of resort hotels along the Costa Brava and Costa del Sol, and the price war that Intasun fought with Thomson through the 1980s. By 1983 a fortnight in a half-finished Benidorm tower with full board cost the same as the equivalent fortnight in a Filey chalet with full board, except in Benidorm the sun showed up. Butlin's closing two of its largest sites in the same year was an admission. The camp model required the British weather to be acceptable. It was no longer competitive against a model that didn't.

What the camps left behind, in the places they didn't redevelop for housing, is a very specific kind of ruin. A holiday camp is not a building, it is a system of buildings: a row of identical chalets in three colour-coded lines, a central pavilion with a ballroom and a stage, an outdoor pool with a diving tower, a boating lake, a row of arcade buildings, and a perimeter fence with a single gatehouse. Most of those components survive demolition unevenly. The chalets go first because they are cheap to flatten. The ballrooms last longest because they are unusually large clear-span structures with concrete floors and nothing easy to convert them into. You can still walk past a Pontins ballroom on the north Wales coast and recognise it immediately from the pitched copper roof and the absence of windows along the lower walls. Inside, the parquet is still down. The stage curtain has been pulled across and left. The spot where the resident band's drum kit lived has a slightly darker patch where the carpet didn't fade.

The surviving operators rebranded out of the word camp in the 1990s because the word had become a liability. Holiday village, holiday park, holiday centre. Center Parcs opened in the UK in 1987 and proved that British families would still pay to be enclosed somewhere with their entertainment provided, as long as the enclosure was made of pine trees and didn't have a row of identical peach-coloured chalets visible from the access road. Butlin's narrowed to Skegness, Bognor Regis and Minehead, rebuilt all three around indoor water complexes, and stopped using the chalet form altogether. Pontins was sold to Britannia Hotels in 2011 and continues a thin existence at a handful of sites that look, in the photographs, like they have been preserved on purpose at the exact moment they stopped making money.

The thing the holiday camp had, and that no current British holiday product has, was the assumption that a stranger through a megaphone could organise your week. The Redcoat and the Bluecoat were not service staff. They were closer to parish priests in shorts, structuring the day with sports days, knobbly-knees contests, glamorous-grandmother heats, afternoon bingo, and the children's club so the parents could have an hour. That structure is what the surviving ruins remember. The pool is empty, the stage is empty, the tannoy brackets are still on the wall, and the calendar of forced collective fun has dispersed into seven hundred individual streaming subscriptions watched alone in seven hundred caravans on the same coast.

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