You don't even need a cover report surely? The scrutiny report speaks for itself. Yes, you need to get away from the chief officer's response-on-a-plate. Has that chief officer been involved in the review and the scrutiny report? In which case his/her views are already incorporated in the report. Here's some ideas:
Make sure your recommendations are SMART - say what needs to be done, by whom, by when. Then the Exec's answer to each is basically yes or no.
Perhaps even draft your own action plan to go with the report, for Exec to endorse. That way you save the chief officer a job, and make sure the Exec signs up to do what the scrutiny members intended.
Enforce para 19.3 of the Overview and Scrutiny Procedure Rules in your constitution at http://www.southwark.gov.uk/download/204...dure_rules
By the way, para 19.4 looks like a recipe for the Cabinet to set the scrutiny agenda...