<P> Some people may have old NHS numbers following the format XXXX 999 . </P> <P> Scotland's equivalent is called a CHI number; a similar system is also used in Northern Ireland with each one of the three using the same format but with non-overlapping number blocks, thus preventing the issue of the same number by more than one system . </P> <P> Currently issued numbers for England, Wales and the Isle of Man are from 400 000 000 to 499 999 999 and 600 000 000 to 708 800 001 . Unavailable number ranges include 320 000 001 to 399 999 999 (allocated to the Northern Ireland system) and 010 101 0000 to 311 299 9999 (used for CHI numbers in Scotland). </P>

When did nhs medical cards stop being issued