Key Problem Discovery 3 TDV6SE

I have problem with my LR3 TDV6 SE 2005 2,7 DIESEL I lost my key and there is no way to start it went to some Car Services that i thought can help me but they dont know how, my Land Rover Service ask from me to buy all new computers for the car and new keys from factory it is too much money , so i think there is a way to start this LR3, Please tell me that is possible to start the engine?

Need HELP.