Bloody Insurance Companies!

Hi, I wonder if you guys can help me out. I'm a broker and my customer is having problems with his insurance following an accident in his 2002 Defender 110. It's actually the engineer and repairer that are the problem.
In the accident the two vehicles came together OSF to OSF at a combined speed of about 30mph. The insurers have fixed our clients front wing and bumper but he is concerned the chassis is damaged. The OSR door no longer fits properly and it is apparent that the upper and lower body sections are not square. There are also signs of movement on the panel around the rear lights. When driving, it feels like the rear is stepping out on left hand bends.
Engineer and repairer say this is existing damage and it is IMPOSSIBLE for this rear-end damage to be related to the accident. I think they would probably be right if we were talking about a monocoque shell car but it seems to me that chassis or body movement (or both) could be likely for the Landy.
The repairer told us they checked the chassis but on investigation it turned out they had done drop measurements from the 4 corners and put some chalk lines on the floor - not precise enough as this is my customers main road vehicle.
Can anyone offer any comments? Even some anecdotal evidence that this type of damage is possible could help me.
Also, are there any independent experts in the West of Scotland (Ayrshire/Glasgow) that could carry out more precise chassis tests? We would consider instructing and paying for that if it looks like our customer has a strong case.
Sorry for the long post. I hope someone can help. (Please feel free to tell me I'm wrong and the insurers are right - it has happened!)

I'm mainly putting this to stop you going off the bottom of the list, but a photo of pre repair damage would help a lot as height of impact is very important here, and size of other vech that was hit - i guess the other one came off worse

PM sent.

They'll try to squirm out of anything.
Stand your ground and tell them it was not like this before the impact.
It's for them to prove, otherwise they are liable.
Have you tried getting an AA or RAC vehicle inspection which if it proves your case you can bill to the insurance company?

Thanks James, photo attached (hopefully)

[/IMG]

Here's another couple

sounds like it has twisted the chassis, if this is recent then there should be some tale tale signs-wants to go on a jig

The angle that the bumper and nudge bar are sitting at on the end of the chassis it does look twisted. Also the angle of the ball joint on the end of the drop arm isn't looking too healthy.

Any decent bodyshop should have a car-aliner or similar if their worth their salt. It might be worth you writing to the jig manufacturers to try and get hold of a spec sheet. You should be able to use this to do some basic measuremants.

The body repair place probably haven't taken into account that all the spring on a landy are different and are location specific. I wonder how they did their measurements with this being the case?