use the key in the drivers door, turn it once to lock it without the alarm, then again to superlock and set the alarm.
some later versions of the freelander rely on a transponder chip in the key which is sensed by the ignition barrel, the very early versions relied on a signal from the unlock/lock fob.
a good way to test whether you could gain access and drive away without the fob is as follows. take the ignition key off the key ring with the fob.
lock the vehicle using the fob, so it superlocks and the alarm is set. Take the fob well away from the vehicle, e.g. indoors.
then unlock the drivers door with the key, turn once drivers door unlocks, turn again they all unlock. then see if you can start the engine. if you can, happy banana, irrespective of what happens to the fob, you'll never get stranded all the while you have the key.