I have a 7 year old Skoda superb elegance - top of the range and in the psat few months both tailgate doors do not work correctly. can anyone advise me where I can obtain wiring diagrams for the tailgate circuits in order for me to if possible trace the fault

Hi, welcome to the site. There is a lot of information on twindoor faults and wiring issues already on the forum. Photos and videos have been posted, try the search feature on top right of page and you should be swamped with posts.