R v Betts and Ridley
R v Betts and Ridley (1930) 22 Cr App R 148 was a 1930 landmark case in English criminal law which established that to be convicted of a crime under the doctrine of common purpose, it was not necessary for the accessory to be present or within sight when the offence was carried out. == Facts == Victor Betts and Herbert Ridley agreed to rob a man, William Thomas Andrews, as he was on his way to the bank.