Rishi Sunak has been resisting making the increase - introduced in response to the coronavirus crisis and due to end next month - permanent despite pressure from MPs.
Nichola Salvato, 49, fell into debt trying to pay childcare costs while working
Brought a legal challenge against the proof of payment Universal Credit policy
The policy only reimburses the money to parents once it has been spent
She brought judicial review against the policy and a judge ruled in her favour
Department for Work and Pensions said Secretary of State will appeal decision