When the new methods were tested in selected areas in 2002, the proportionof cases where charges were changed or dropped fell from 51% to 18%, while conviction rates rose by 15%.
The proportionof terrorism-related arrests resulting in charges - 36% - is in line with the average rate for terrorism-related offences since the attacks on the US of 11 September 2001.
Closer to home, despite the imposition of dental charges in Britain since the 1950s, there has been a steady rise in the proportionof people with a healthy set of teeth.
"We could raise a good proportionof that through voluntary contributions, " he said, adding that a future Conservative government would overturn the charges.