All 3 to 4-year-olds in England, and some 2-year-olds, can get 15 hours per week (570 hours per year) of free early education or childcare. This starts from the term after the child turns 2 or 3. Some 3 and 4-year-olds can get 30 hours of free childcare per week (1040 hours per year).
The Department for Work and Pensions have released a universal credit and childcare guide giving information on who can claim support with childcare costs and how much.
There is also a helpful early education funding FAQ document