The information requested falls within the responsibility of the National Statistician who has been asked to reply.
Letter from Karen Dunnell, dated 26 November 2007:
As National Statistician I have been asked to reply to your questions regarding what the estimated ratio of working age to pensioners was in each constituency in England in (a) 1997 and (b) 2007; and what the figure is expected to be in 2017. (167574)
ONS does not have parliamentary constituency population estimates for the whole of England, for 1997 or 2007, or population projections for parliamentary constituencies. I am therefore unable to answer the questions asked.