In response to (a) the Department for Constitutional Affairs made 440 statutory instruments from 1997. Since 9 May 2007 the Ministry of Justice has made 118 statutory instruments. This information has been supplied by the Office of Public Sector Information from data recorded on their registration database which does not hold details of any statutory instruments made in 1997 and may hold only partial details of those made in 1998. In response to (b) this information can be supplied only at disproportionate cost. No central record is maintained of this information. Revocations will have been made by new Acts of Parliament or new statutory instruments.