Can anyone help me with some ideas as to why my seats are not heating up, the lights come on but no heat, i have checked the fuses and their fine ?

Very bottom of this page may help.

you need to have a look on range rovers.net. its an easy fix and works a treat.

read Heated Seat Repair Operations and get to work!!!

would this be the case for both seats then?

more than likely, put a multimeter in the plugs, one in each plug and test the circuit for continuity!

they break at the metal insert that forms the rib in the seat base. repair them and move the wire so in goes to the side of the rib instead of under it. tape it in place with duct tape. job done!