[Closed] Land Rover starting issues

I know this should be on LRO.com but they cannae recognise me password so its posted on here as theres always some very knowledgeable peeps on here.

Cannae start me 300TDI Defender with the key, all usual lights display then nothing when I try and turn it over. Have replaced the starter motor and checked the old one, checked battery, checked earth connections and wiring, everything appears fine. The engine doesn't even crank over, the only way I can start it is by using a screwdriver on the starter motor contacts, it starts every time this way in an instant. Once its going it seems to start fine.
So does anyone know where else I should check?
Thanks.