The judge had been wrong to admit documents, prepared by police officers, giving details of methods used in the commission of offences of which the appellant had been previously convicted, but the appellant’s convictions for the instant offences were nevertheless safe. It was important that the formal procedures referred to in R. v Hanson (Nicky) (2005) EWCA Crim 824 , (2005) 1 W.L.R. 3169 were followed.