I'd disagree that all, or even most of, Mike Leigh's female characters are victims. In Happy Go Lucky for instance, the main character may be a bit irritating at times, but she is in no way a victim, as is shown by the way she deals really proactively and assertively with the difficult situation with the driving instructor. His character exmplifies how a lot of Leigh's films have male characters who are very weak and are victims of their own anger or inadequacies, regardless of class - another classic example of this is Keith's character in Nuts in May. He is definitely portrayed as a pompous, overbearing prat but in such a way that you can still feel some sympathy with him when everything goes tits up. He isn't completley demonized.
The two main characters in High Hopes, to my mind, are also portrayed sympathetically and from what I can remember the ending suggests clearly that they can escape or break out of any victimhood they may have felt in the film. High Hopes and Naked, in my interpretation, are both partly about how Thatcherism/the Eighties brutalized and dehumanized life for a lot of people across social classes but the characters aren't portrayed as passive victims trapped within their situations. Alison Steadman's character in Life is Sweet, is the strongest character in the film and again has to hold family together while the other male characters flail about pursuing different dreams - Andy with the van, Patsy with the (terrible) restaurant - its her strength that holds things together despite the male characters' weaknesses.