I have made my views on a constitutional convention known. Other hon. Members have raised the issue of air passenger duty. The Treasury has established a group to look at the impact any changes to air passenger duty in Scotland could have on airports in England.
On welfare policy, there will also be a highly significant transfer of responsibility. While the social security reservation remains in place, part 3 of the Bill means that the Scottish Government will be responsible for welfare, which last year accounted for around £2.5 billion of spending in Scotland. The Scottish Parliament will be able to make provision for a number of types of social security benefit, discretionary payments and employment support. The Bill also contains provision to transfer executive competence to Scottish Ministers to allow them to vary certain aspects of universal credit. It will give the Scottish Parliament more responsibility for benefits paid to carers, disabled people, those who are ill, those who require help with winter fuel costs, funeral payments and maternity payments. As a result of the Bill, when people most require help the Scottish Government will be able to tailor that help to particularly Scottish circumstances.