Lintorn-Orman was born at 36 Cornwall Gardens in Kensington, London, to Charles Edward Orman, a major from the Essex Regiment, and his wife, Blanche (née Simmons).

[4][10] During her time in the war, she was, according to a later report in the fascist press, twice decorated with the Croix de Charité [fr], awarded for gallantry in action, for "heroic rescues in Salonica".

[16] Lintorn-Orman was essentially a Tory by inclination but was driven by a strong anti-communism and attached herself to fascism largely because of her admiration for Benito Mussolini and what she saw as his action-based style of politics.

[21] Nonetheless, the BF lost much of its membership to Mosley's party after Neil Francis Hawkins left in favour of the BUF in 1932 after a formal merger was narrowly rejected.

[25] Lintorn-Orman was taken ill in 1933 and was sidelined from the British Fascists, as effective control passed to Mrs D. G. Harnett, who sought to breathe new life into the group by seeking to ally it with Ulster loyalism.