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On this site alone, he had tried the high brown fritillary, Scotch argus, small heath, marbled white, grizzled skipper, wood white and chequered skipper.

White’s claims about the return of the marbled white is supported by data from the UK Butterfly Monitoring Scheme, the world’s longest-running dataset for butterfly distribution.

It shows how the marbled white was absent from the Midlands in the 1980s, but is today found continuously in a northwards line through Nottinghamshire and South Yorkshire.

The hot summer of 2018 must have produced “a metric fucktonne of caterpillars” she laughs: the following year there emerged hundreds of marbled white butterflies.

Peacock butterflies had their best summer since 2014, with a 235% increase in numbers sighted compared with last year, while the marbled white saw a 264% increase.