G. Virgo, ‘Legislative Comment; Encouraging or assisting more than one offence’ (2012) 2 Arch Rev 6-9.

M. Dyson, ‘Scrapping Khan’ [2014] Crim LR 445.

S. Bock and F. Stark, ‘Preparatory Offences’ in K. Amos et al, (eds) Core Concepts in Criminal Law and Criminal Justice (CUP 2020).