In London, two very different worlds collide around a working-class woman and a wily financier. Mrs. Cragg [Peggy Mount] works as a charwoman for the retired Colonel Whitforth [Robert Morley], and she also cleans an imposing office block that belongs to the city’s financial elite. While tidying a high-rise corridor, she pockets a cigar left behind by the ambitious financier James Ryder [Harry H. Corbett], wrapping it in a scrap of paper that looks like a mere trifle. The Colonel soon discovers that the scrap is not trash but a telegram—inside information about a City takeover bid that never materialized. Exploiting the knowledge, the Colonel bets on the stock market and makes a tidy profit of £5,000, which he immediately offers to share with Mrs. Cragg as if kindness might absolve cunning.
Though she can’t quite grasp the intricacies of insider trading, Mrs. Cragg senses something is off. She heads to inform Ryder, but before she can, she overhears him on the telephone outlining a plan to demolish Pitt Street and evict her neighbors to make space for a gleaming office complex. He matter-of-factly explains his ambition, and his sly assurance rings in her ears: “If you want anything, you’ve got to go out and get it … so long as it’s legal.” That line sticks with her, turning fear into resolve.
Determined to foil Ryder’s scheme, she rallies three fellow residents and fellow office-cleaners in Pitt Street to form Ladezudu Ltd, a cheeky moniker for a small, self-styled syndicate: “Ladies Who Do.” The venture is steered by Whitforth’s steady hand, turning their shared observations into a cautious information network. They pool their savings—now totaling £60,000—and pool it into a high-risk bet on an Irish pig producer, hoping to ride a wave of market gains through insider insight and grit.
Disaster strikes when swine fever sweeps through the pig stock, wiping out the investment and leaving the women with nothing but their resolve. The financial punch lands just as Ryder and his ally, the formidable Sidney Tait [Jon Pertwee], press residents to move quickly, offering £100 per household if they agree to relocate within a month. The plan meets stubborn resistance, and the partnership between Ryder and Tait dissolves as his own precarious finances threaten to topple the entire project.
With everything seemingly lost, a glimmer of hope arrives from an unexpected quarter. The Colonel delivers startling news: when the pigs were buried, valuable “deposits” were discovered, meaning Ladezudu could recoup far more than their initial stake. Buoyed by this twist, Mrs. Cragg rallies the group and mounts renewed resistance, convincing Ryder’s investor Mr. Strang [Nigel Davenport] to withdraw from the scheme. The odds tilt back in their favor as a new dynamic forms around the office-building plot.
The price of victory, however, remains uncertain. The Colonel invites Ryder to his office to discuss a possible sell-out, and Ryder finds himself sitting across a table with the four charwomen acting as a board—an order of unlikely directors who’ve learned to leverage quiet knowledge into real power. The invitation for Ryder to lunch and join the board marks a turning point, a moment where the lines between profiteering and protection blur.
As the room empties, a lingering tension remains: an unknown man slips into the space, methodically going through their waste paper, hinting that someone else is always watching the moves they make. The film closes on this quiet, unsettled image, leaving questions about who truly holds the power in a city built on information, leverage, and the smallest scraps of evidence.
