yes sorry it is one way for hall and outside and 2 way to landing, it did have a live link wire but its all a's and B's and not L1 L2 on old one so do not know how to transfer than info to new socket prefixes
I am fitting a dimmer switch to control the hall landing and outside light, I have taken off the old 3 gang switch and it is completely different set up to new l1 l2 com
Also I only have 2 sets of wires both 1 red 1 blue 1 yellow so i presume the outside light is connected to the hall ceiling...