She may be best known for her long-running role (1979 to 1985) as Barbara Hunter (née Brady) in the British soap opera Crossroads and Cordelia Winfield in the ITC series The Baron.

[2] In 1953, she won a scholarship to the Royal Ballet School at Sadler's Wells Theatre,[3] but when she grew to 5 feet 8 inches [1.73 m] her possibilities for a career as a dancer diminished, and she became a showgirl and model, and, briefly, a member of Lionel Blair's dance troupe.

As Jean Courtney, Lloyd proved an effective foil to Michael Caine's Harry Palmer in the spy thriller The Ipcress File.

[6] In 1965, Lloyd played the regular role of secret agent Cordelia Winfield, alongside Steve Forrest in the 1965–1966 British ITC television series The Baron.

She made many guest appearances in several popular shows of the 1960s and 1970s, including The Saint, Department S, Jason King, Randall and Hopkirk (Deceased), The Persuaders!