It is the Client’s responsibility under the new regulations to give notification so I am guessing you will only be able to sign the F10 as the Client. After 6th April we will only advised clients but they will have to do the notifications. However if you are already appointed as the CDM-C and put your notification in before 6th April 15, notification under the 2007 regulations is deemed notification under 2015.

You already have a live project and according to HSE it should be notified asap not when it is due to start on site. Notify under the 2007 regs as they are still in force. This has been a long standing belief that you only notify the project when you have a construction start date finally fixed. I see no real change under the new regs about this matter. As soon has a client has put the design process into play the an F10 is required. Dates and names can be revised later

I would still get the Client to sign it rather than me signing it on their behalf. This is after bitter experience of a client accessing me of fraud for filling in a F10. Duties should be carried out by those who have the duty. May make a client focus on what they are doing and or should be doing!