I've got two electrically heated leather Jaguar seats that came out of a late bay. I bought them for £60 from a guy on here but never fitted them into my bus because we decided to keep the original seats and have them reupholstered. Their taking up space in my garage at the moment so you can have them for £40. I'm in Peterborough.
Have you seen this? Not sure if these would do or you want originals. http://thelatebay.com/index.php?topic=8838.0;topicseen
Finally managed to get my act together and actually take some photographs. The leather could do with a clean but otherwise in good condition.