Prof Pilling, who worked on the guidance suggesting classes for parents of children with conduct disorders, said treating the disorder would save money that would otherwise be spent in the criminal justice system.
By any standard that Nice operates, these treatments are clearly cost effective.
If you put in criminal justice costs, these interventions are dominant. It's actually cheaper to provide them than not to provide them, they're saving money.
The cost of not treating a 10-year-old with a conduct disorder for the next eight years, over the rest of their childhood, are in the £80,000 to £100,000 range.
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His comments at the Defence and Security Forum on Monday came after a £20 billion black hole in the budget for the next decade emerged.
The Foreign Secretary said he thinks the health service should be "at the very top of the list" for a windfall after the UK leaves the EU.
Turning wet and breezy from the west overnight.