Description: The paper gives an overview of the data that are available and discusses the problems encountered in estimating mortality rates at old ages in the UK. It describes some of the methodologies used to construct mortality rates at advanced ages for official life tables and recent work undertaken by the UK Government Actuary’s Department to construct a database of historical mortality rates for the United Kingdom going back to 1961. Mortality tables for ages 85 and above are provided for years 1961 - 2000 by gender. Finally, possible methods for projecting mortality at advanced ages are discussed.