Thanks again for your help stem, I thought that was the case but when I did some research a lot of people had went with the install where they put in a loop from terminal 2 to the L.
So they did the following:
N = N
L = L
E = E
LR = 3
Loop = From L to 2
Thanks for your reply stem.
Yes, I already have a thermostat (dryton digistat scr). It's also a 3rd generation nest.
It has 5 core flex to the current thermostat. The current set up has the following terminals: N, L, Common, Call and earth (even though the stat plastic).
So would it just be...