[holding answer 21 April 2008]: The evidential basis for the impact of migration on trend economic growth is set out in the joint Home Office—DWP submission to the House of Lords Select Committee on Economic Affairs, The economic and fiscal impact of immigration.
According to official data from the Office for National Statistics, migration added around 0.5 percentage points per annum to growth in the working age population between mid 2001 and mid 2006, and, therefore to overall trend output growth. On this basis, the contribution of migration to economic growth in 2006 would have been some £6 billion.
The trend growth framework employed by the Treasury, and the impact of migration on the trend growth projection, is set out in Trend growth: new evidence and prospects, available at:
The information requested on expenditure and remittances falls within the responsibility of the Office for National Statistics. No statistics are collected on expenditure by immigrants on goods and services. The available information on remittance payments was laid out in a letter from the National Statistician to Lord Lament of Lerwick on 19 November 2007, Official Report, House of Lords, columns WA47-48, in answer to his parliamentary question of that date, to which I refer the hon. Member.