That is the best I can do at this stage. However, I accept that that is a bit tentative as an answer, so I will look to get the noble Baroness a better answer, or as full an answer as I can provide after talking this through with colleagues.
The Government believe that these changes strike the right balance between protecting the vulnerable—we have discussed the extra support for families with disabled children—while encouraging families which receive both child tax credit and universal credit to make the same financial decisions about the number of children they can afford as are made by those families who support themselves solely through work. They help to make the welfare system sustainable and the move towards a high-wage, lower-tax and lower-welfare country. Clauses 11 and 12 should therefore stand part of the Bill.