RUGBY, England—Stuart Field raised his first flags in July: the English red cross of St. George and also a smattering of the British red, white and blue, hanging them from his hometown’s streetlights.

On the journey of making my new documentary film “Quintessentially British,” I encountered some quirky lords, charming knights, irrepressible dames and Shakespeare-quoting taxi drivers. I grew up in ...

STEVENAGE, England — A tide of red and white is rising across England — hoisted on lampposts, daubed on crosswalks, stuck on apartment windows. Those behind it insist this campaign to raise the ...