Question to the HM Treasury:

To ask Mr Chancellor of the Exchequer, what the (a) mean and (b) median age of people registered as self-employed was in (i) Scotland and (ii) Kilmarnock and Loudoun constituency in (A) 2010, (B) 2011, (C) 2012 and (D) 2013.

Estimates of the numbers of individuals with self employment sources are published in HMRC's National Statistics table 3.10 which is available at the following internet address:

https://www.gov.uk/government/publications/income-of-individuals-with-self-employment-sources-2010-to-2011

The numbers of individuals making zero profits and at other income levels is also shown in these tables.

Tables for 2009-10 and earlier years are available from the National Archives internet site at the following address:

http://webarchive.nationalarchives.gov.uk/20121102223513/http:/hmrc.gov.uk/stats/income_distribution/menu-by-year.htm

Overall, these show a long term trend of growth in the numbers of self-employed people.