Thanks for your comments.
Unfortunately I only have a 3-core (L/N/E) armoured cable already buried under my drive.
Seems I am too late to achieve the 2 x PIRs configuration.
I am installing 240 volt lights on my drive and would like them to be switched on by a PIR at each end of the drive. This needs to be able to incorporate 2 PIRs in the same circuit and I have been unable to find any way to do this (including talking to a fully qualified electricianI,
Is it...