Just found this: http://www.landrover-uk.net/forum/showthread.php/146226-Replacing-door-lock-barrels-additional-info In which Paul says "you have to insert the key in the lock and turn the key until you can see the brass pin then depress the pin and wiggle the key in the lock to remove the...

Did you get anywhere with this? I've exactly the same here issue this afternoon. If I peer down the hole in the casing of the lock I can see the barrel shroud turning when I turn the key. At a certain pont the shroud has a hole inside which I can make out the brass (?) stud on the end of the...