Tony paterson, i owe you a VERY large beer!!! A few roof straps had broken and frayed on my E Class, but the roof was still operational. Mercedes Aylesbury (part of Vertu) sold me the car originally, and quoted me £4.3k to replace the straps as it is outside of warranty. I emailed a complaint to the CEO's of Mercedes UK and Vertu (you can easily find their details online), including a copy of Tonys two documents on this thread, and explaining why i thought Vertu were at fault and should repair for free. i pretty much just quoted what Vertu's obligations were per the ombudsman ruling in Tony's case. Mercedes rejected the complaint, and i assumed Vertu would do the same and i'd have to go to the ombudsman.
I've just had a call from the dealership - they are going to cover 100% of the cost of the repair! Not sure what i would have done without Tony's documents, i doubt i'd have complained to this extent or gone to the ombudsman, probably just paid a couple of thousand for an independent garage to repair it.
So thanks Tony, you have save me a small fortune!