Constitutional Reform and Governance Bill

I am obliged. I appreciate that this is a sensitive area and I welcome the acceptance of 20 years as a general proposition. It is difficult, however, to see why commercial enterprises should have the retained 30-year holdback, in particular in the case of local authorities. What possible contract could a local authority enter into that would need protection for 30 years? If the right hon. Gentleman could build on what he started to say about commercial interests, particularly as affecting local authorities, it would be helpful. Is this intended to protect defence establishments or the nuclear industry; what is the purpose behind this 30-year retention of information?