I should have made it clear that the data I used does not "cover items dispensed in hospitals or on private prescriptions." It does include Welsh and Scottish prescriptions dispensed in England, but not English prescriptions dispensed in Wales and Scotland.
I'm not clear of the status of Duodopa in the NHS, but I did find this:
"Of the 14 patients that are currently under his care with Duodopa, none are on 2 cassettes. One is sufficient. That reduces the cost to £28,000."
http://www.commissioningboard.nhs.uk...omm-resources/
The following report gives a lot of details about Duodopa:
http://www.duodopa.co.uk/PDFs/Duodop...raph110711.pdf
John