The 1.8 engine in the Freelander is well known for this problem. Where I work (an independent 4x4 garage) we've seen many cases of head gasket failure. Next door to our workshop is a landrover main dealer, the freelanders are a running joke with the neighbouring technicians. A couple of months ago I was discussing a 2nd head gasket failure on the same vehicle with the workshop manger from next door, his reply was interesting - they had a freelander currently in their workshop, they had given up changing head gaskets, the vehicle was on its 3rd new engine................... Not forgetting the IRD units that self destruct, they rear tyres that drag and the water ingress in the back door....................... Don't get me wrong, I currently own 2 90's and 6 Range Rovers but I sold my Freelander!
Good luck
Lee