Right! Thanks to the great help from this forum and the really useful articles on Rangerovers.net the door is open, the key synced, and the engine started. Took drivers door exterior window trim off, it just lifts up. Used two plastic wedges and tried various tools down inside the door, pulling and pushing anything that moved. Could see key turning lock and moving lever, could see door handle moving its lever, but couldn't open door. Stuck the old Blue Peter sticky backed plastic across the window and broke it using spring loaded centre punch, the old car thief's tool of choice. With window gone it was easier to see down inside door but still couldn't trigger the lock. Getting the door card off was fun, but managed it with only a small split right in the footwell. Removing the door card was of little use because the lock sits inside the door which effectively is double skinned. However we needed it off to replace the window of course (£39 off eBay). Started thinking about smashing into the door lock with hammer and crowbar, gave it some hefty blows but couldn't break it. When for a heavier hammer and my mate Ian shouted he'd opened it! After I finished hugging him several times (in a purely manly way of course!), he showed me the problem. The rod attached to the key lock was depressing its lever, as we had seen earlier, but he pressed it with a metal rod we were using and it moved a tiny bit further, and clicked. Door opened! We oiled everything, fitted new window (which we didn't need to break had we known the issue), put door card back (SO much easier with the door open!) and we are working again as usual. Now have lost confidence in P38 though and can't trust it. Range Rover 2.5 DSE, 1999, 127,000 miles, really nice condition inside and out for its age, dark blue, privacy glass, yours for £2000. Thanks again to everyone who helped directly, and those who posted loads of photos and tips on various sites. I bet you can't find that camaraderie for other marques. I will miss it but am buying a new Leaf. Don't laugh!