I have been asked to reply.
For the number of properties on the list in 1997, I refer the hon. Member to the answer given to the hon. Member for Meriden (Mrs. Spelman) on 5 January 2010, Official Report, column 232W.
For the number of property types on the list in 2010, I refer the hon. Member to the statistical release titled “Non-domestic rateable values: 2010 Local Ratings Lists - England and Wales” published on 18 December 2009. A copy of this statistical release is available at the following link: