Called LV (insurance) as mine was cracked which takes you straight through to Autoglass, so booked the job and the lad turned up this morning.
First thing he noticed as he drove in (he said) was that my offside wiper arm was not the correct fitting for my car & that rang a bell as I have had an issue with the offside wiper being noisy since I bought the car. Once he had pointed out that at rest the wiper should lie flat along the heated element section I could see what I had been missing for so long and as he said it looks like a nearside arm from another Lexus model.
Anyway as it was a Lexus approved vehicle I called Listers Coventry to let them know what had been found & service tell me that they will be looking at the pictures I sent them.
Apart from that a very smooth operation from Chris at Autoglass who certainly knew what he was doing and I would certainly use them again, well hope not though.