She followed her husband as Member of Parliament for Holborn and St Pancras South, holding the seat from 1953 to 1959.

Her husband died in 1953 and she was selected as Labour's candidate in the resultant by-election in Holborn and St Pancras South.

She won the by-election, held on her birthday, by 1,976 votes, slightly increasing the Labour majority.

[5] The seat was renamed Camden, Holborn and St Pancras South in 1974, and she retained it until the 1979 general election.

[3] Following her retirement from the House of Commons she was created a life peer as Baroness Jeger, of St Pancras in Greater London, on 11 July 1979.

She was treated at the Royal Marsden Hospital for cancer,[8] and was granted a leave of absence from the House of Lords.