Solved

meraaakauser

Thank you.

calcotti

If you are separated you are allowed to claim as a single person even though you live under the same roof. Obviously you have to convince them that the separation is genuine. You need to be prepared to be asked questions about your relationship and your living arrangements in order to satisfy DWP that you are actually separated. You should aim to separate your finances. Guidance is clear however that people who have separated may, out of necessity, still be living under the same roof.

See https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/890308/adme2.pdf

Single claimant
E2012 A benefit unit can consist of a single claimant where that person
meets all the basic conditions for UC and
they are
2.1  not a member of a couple or
....
This benefit unit may also include any child or qualifying young person, for whom the claimant is responsible (see ADM Chapter F1).
...
Example 4
Married couple Andy and Aniza are estranged and continue to live in the same house. They do not financially support each other or share domestic and social activities. One partner is reluctant to leave, until a satisfactory financial agreement has been reached with the other partner. They each have separate households and as such each claim UC as a single person.