Yes - a proportionate one. The contractor has to be able to demonstrate appropriate arrangements to manage risk, mitigation of project-specific risk and any site rules. If you can demonstrate these things by referring to existing documents (client's specification, existing RAMS) and are able to use these to communicate to the workforce, then there needn't be additional paperwork. There is a simple template on HSE Busy Builder you can consider.

Also in the HSE handout CIS 80 Construction Phase Plan (CDM 2015) which says "Under the Construction (Design and Management) Regulations 2015 (CDM 2015) a construction phase plan is required for every construction project."

bigpub This is a grey area and I know that both myself and Ron have put different arguments across. For now, as far as I can see, they are both valid. I always compile a CPP with site rules, RAMS, copies of the F10, info relating to schedule 3 and an overview sheet which basically summarises the document for easy reference. I then always call this the "Construction Phase Plan". I always feel that this approach is more substantial than just referencing other documents. But, as you say, we will have to wait for it to be tested in court. And the answer to your OP is, as others have already said, yes!