For UC, I had to cut and paste as not sure myself, but this seems a good summary:
What are the changes to universal credit?
The government had planned to freeze the health top-up of universal credit for existing claimants until 2030, but after the backlash payments for current recipients will now rise with inflation.
People with a limited capacity to work because of a disability or long term sickness, get a universal credit top-up payment of £416.19 a month.
But for new claimants from 2026, the payments will be cut in half, from £97 a week to £50 a week in 2026-2027.
While the top-up is being cut for new claimants, the basic rate of universal credit will rise from around £92 a week to £106 a week by 2030.
Under the plans, under-22s will also no longer qualify for the health element of universal credit.