A public sector cost/benefit analysis of the data sharing measures under part 3 of the Serious Crime Bill can be found in the regulatory impact assessment published on the Home Office website:
http://www.homeoffice.gov.uk/documents/Serious-Crime-Bill-RIA.pdf
We do not envisage the powers leading to additional costs or burdens on the private sector. Our expectation is that where the powers are taken up they will help to lead to reductions in the cost of fraud in both the public and private sector.