Breach the principle only for the most serious issues and it will, inevitably, move on through the system.
Child abusers should no longer be allowed to escape prosecution under the double jeopardy rule, says the victims’ commissioner.
Dame Vera Baird wants the law to be re-written so that paedophiles who have been acquitted of indecently assaulting children can be brought before the courts again if new evidence emerges.
It follows cases where sports coaches have been charged and acquitted but cannot be retried because the offences did not involve penetrative sex.
Less serious sexual assaults are not included in the list of offences where prosecutors can override double jeopardy – the rule barring the retrial of a defendant for an offence of which they have previously cleared by a court.
Slippery slopes do exist.