DWP and the confusing WP payments

Recently I came across DWP payments for June 2014 and going back 6 Months,thousands of entries,but a pattern evolved. JSA sustainment payments,which are based on job outcomes,each Provider can claim for each Month that a claimant remains employed,so far so good,but how is it possible that A4E can be paid for outcomes in London and be paid the exact amount (to the penny) for outcomes in the midlands and 2 weeks later G4S receives the exact amount at another location,these are listed as outcome payments,not service fees,the chances of such a diverse group having exactly the same amounts of clients is just not possible,something is just not right! Any ideas?