Complex projects and events need safety and security handled together, by one person who can hold the whole picture and answer for it. I take that role, bring specialists in where a discipline needs them, and stay accountable for the result.
What I have seen on complex projects and events. My own view, not research. Every supplier can be competent and the project still arrives in this state.
Three suppliers each deliver their part properly. The spaces between those parts belong to no contract, and that is where the problem almost always turns up.
A decision that makes sense in one creates a problem in the other. A door propped for evacuation that defeats the access control. A lockdown that puts people where you would rather they were not. The two have to be thought through together.
You appointed specialists and became the project manager of them, chasing the interfaces yourself. That is the job you were trying to hand over.
Handover is a pile of documents from several organisations. Ask what is in place, what is still open and who owns each part, and no single document answers you.
The point of this arrangement is that you deal with one person, and that person owns the joins between the disciplines and does not hand them back to you.
One conversation, one person who knows the whole picture, and one place the questions go. The joins between the disciplines are mine to manage.
Where a piece of work calls for a discipline I do not hold, I bring in a specialist who does. I remain accountable for how their work fits the rest of it.
Governance, management systems, quality, continuity, security and day-to-day compliance are separate services on this site. On a project like this they come as one job.
One document saying where things stand when the work finishes, written so a board, a client or an incoming operator can read it as it is.
Each of these can be bought on its own. On a job like this they come as one scope, sequenced against the project.
The method holds at both ends. A large infrastructure programme needs the interfaces managed because there are so many of them. A single event needs it because there is no time to discover one on the day.
What changes between them is the size of the network I draw on, and how much of the work I do myself.
All conversations are treated as strictly confidential. Early is better than late on work of this kind, because the interfaces are cheapest to settle before anything is committed.