The DfE have collected all of the guidance re statutory policies into one place. The guidance notes state: “Schools and trusts are not always required to hold a specific policy for each requirement. It is possible to meet several requirements collectively, unless stated otherwise. The drafting of school policies can be delegated to any member of school staff, unless stated otherwise. This document covers how often each policy must be reviewed. Where it doesn’t, we strongly advise you to review the policy annually. Where there’s a change in the law or circumstances, you will need to revise your policies or documentation accordingly. It also shows the level of approval required. Not all policies need to be signed off by the full governing body.”
The document is available here.