From that external fixing the second engineer ran an external fibre cable to where I wanted the ONT, the cable was then brought through the wall and connected up to the ONT. Obviously I had to have a power socket close by for the ONT. If you think of an ONT as a modem then an ethernet cable is then run from that as per normal and connected to the WAN port of the router. My engineers were very helpful.
Edited by Jax2 (Sun 14-Feb-16 14:49:33)