We have published forecast figures on the numbers and percentages of metered customers in England and Wales in our "Water and sewerage charges report 2007-08" [see tables 8 and 9, page 22]:
Figures 2, 3 and 4 [pages 23-24] in the report give the proportion of customers taking measured supplies in 2006-07 and 2007-08 broken down by water and sewerage company.