Ideally, the priority should be taxing multimillionaires and corporations like Amazon who exploit loopholes to avoid paying their fair share. Go after them first.
After that, I’d tighten the rules around claiming benefits it should be a safety net, not a lifestyle choice. The system especially needs stricter oversight on disability benefits. Too many people know how to play the system. For example, I work with a guy who claims PIP for autism, yet he owns his own flat outside London, earns £60k working in central London, and lives independently. He told me the desposit for his flat came from his parent's saving the disibility payments for him since he was a child, they are a very wealthy family. It’s hard to see why he needs additional financial support then or now.
Pensioners, however, I would leave alone. Not all of them are wealthy, despite what’s often suggested, and those who have worked hard all their lives shouldn’t have to struggle in old age.
I’d actually like to see tax breaks for working families. Middle-income households, where both parents work full-time while raising children, often get no help at all and can end up worse off than people who don’t work and receive extensive subsidies. Hardworking middle earners who are raising the next generation should not be penalised for their effort and responsibility.