Wiktionary
early doors
a. (context Northern England English) early, near the start or beginning adv. (context Northern England English) Early; at a time before expected; sooner than usual. n. (context Cockney rhyming slang plural only English) woman's drawers.
Wikipedia
Early Doors
Early Doors is a BBC sitcom written by Craig Cash and Phil Mealey who also appear in the series playing best friends Joe and Duffy. The setting is The Grapes, a small public house in Stockport where daily life revolves around the issues of love, loneliness and blocked urinals.
Usage examples of "early doors".
The room around her was emptying: early doors, as Rebus would have called it.