The 25-year-old served his time in Belmarsh prison in south-east London and he admits the whole experience was a nightmare that has scarred him for life.
"They took me down to the room, handcuffed me and put me in the security van," he said in a film recorded by the Professional Cricketers' Association.
"I felt so scared. You are in this little box and you can't look outside the windows of the van because they were blacked out. My time in Belmarsh was hell for me."
Westfield now works as a shop assistant in a Tesco supermarket in east London.