Spur arrangement from consumer unit.

Hi,

I'm waiting for my electrician to arrive so he can install a separate consumer unit, with 4 spurs running into the 250, XPS, Hicap and Napsc.
I remember reading somewhere that there is a preferred order that the spurs should be connected to the comsumer unit, but I can't find the thread.
Can anyone offer any advice?

Thanks,
Andy.