fair field and no favour

a fair field and no favour (equal conditions in a contest, not unduly favouring or hindering either side) — равные возможности, условия, шансы для всех; игра или борьба на равных условиях, с равными шансами на победу

Example 1: They continued the traditional campaign for a "fair field and no favour" for women entering the public sphere. (Jane Lewis, "Women in England 1870–1950: sexual divisions and social change")

Example 2: TInstead, they focused their main arguments on the position of women who did not marry, using the individualistic framework of nineteenth-century liberalism and political economy to argue for a "fair field and no favour" and the removal of all barriers that hindered single women from earning a decent living. (Jane Lewis, "Women in England 1870–1950: sexual divisions and social change")