Sowerbutt's Clacton

Rosetta smiled. “Your Mr Churchill, he takes his invasion seriously. All non-essential civilians were evacuated from Clacton last year. All sorts of army here – gunners, infantry, pioneers. Most of the hotels and B&Bs have army staying, very few outside visitors these days. They’ve taken over Butlins holiday camp as a barracks."
http://www.amazon.co.uk/Colour-Smoke-London-Sowerbutt-Novels-ebook-x/dp/B00RYR8BWG