Morning Char
Presumably the interviewers have your CV, which unless it has gone over the top in overegging your background should indicate that you are unlikely to have had much experience of CDM at the sharp end.
This leaves you with two types of interviewer (and the panel might include both!!)
1. Those who recognise that you will be on a CDM learning curve if you get the job and hence will not be expecting you to be brilliant with any answers on CDMish questions, but who want to know what transferable skills you will bring to the table - after all the project team should all be familiar with implementing CDM.
2. Those who will expect you to be semi-expert on CDM despite the indication in your CV that this has not been your forte. To be honest, no amount of preparation is likely to persuade this type of interviewer that you are right for the job UNLESS there aren't any candidates who have lived and breathed CDM OR they come with a price tag that the recruiter is unwilling to match.
So, I would read the current guidance on CDM - L153 downloadable from the HSE website.
....and IGNORE all the waffle about the exclusions - the project won't be for a "domestic client" and there won't be any debates about various thresholds for application of some of the regulations.
Focus on Parts 1 to 3.
Part 4 is a consolidation of the precautions and welfare requirements that have been around almost word for word since the 1960s (actually earlier).
Better still, try and find a copy of L144 which was the Approved Code of Practice and guidance supporting the previous iteration of CDM (2007) - has good guidance on taking a proportionate approach to the selection of supply chain contractors etc. May still be on the HSENI website. But remember that it covered slightly different legislative requirements (though not that much changed).
Then read HSG150 "Health and safety in construction" as that gives you practical advice on just about everything in Part 4 of CDM.
Remember that CDM doesn't sit in splendid isolation. All the other Regulations that you are probably familiar with apply in construction as in any other sector.
As I said earlier the project team should understand what needs to be done for CDM whilst the internal and/or external auditors are entirely capable of ticking boxes to say that certain deliverables have been done. But they might be less capable of commenting on the QUALITY of those deliverables.
So, they should want an HSEQ adviser to help them out with the practical things about identifying the actual risks of whatever process is to be done and how to mitigate those risks.
AND you might be able to add value by NOT knowing much about construction projects. You would bring fresh thinking as you haven't had the chance to get so accustomed to "we've always done it this way" that you can ask "WHY are you doing it this way?"
Good luck, Peter