The figures caused dismay in Tower Hamlets, an area trying to tackle its high crime rate. How could the borough see a nine per cent increase in offences when across London there had been a drop of two per cent? Councillors had invested £1.8 million on extra police and put 40 Enforcement Officers on the streets. The answer brought relief and not a little annoyance. A computer error by the Met had produced a spike in crime in a three-year period six times greater than it really was.