One Day in London[1] is a 1965 British musical comedy film directed by Sidney Hayers and starring Joe Brown, Sid James, Sophie Hardy, Una Stubbs and Dave Nelson.

[3] Three young Cockneys take a day off work to meet Lisa Milan, an Italian movie star, at Heathrow airport.

[5]Kine Weekly wrote: "Gay, modern, musical comedy which includes a novel travelogue of London.

"[9] The Radio Times Guide to Films wrote: "Not even the presence of the great Sidney James can elevate this story of Sophie Hardy's search for three typically English hats.

The script, co-written by Carry On regular Talbot Rothwell, raises a few smiles, but the songs signifiy a new low in screen pop music.