Ok, this is where you can sell yourself a little bit, but not too long as they dont want to be reading everything again that is in the CV.
Your best option is to try and pick out relevant bits that fit with the job you are applying for, as an example, if the job was in say retail, then any shop experience or cash handling or customer service experience you have you could add in, saying something like “As you will see from my CV I have from working with . During my period of employment with them I did ”