Thanks for the all the replies. We’ve also read the excellent material by the person (whose logon I’ve forgotten) who put a 7 side attachment concerning the sunroof leak. This article has over 30 pages of replies, comments and response. Anyway, I have tried sealing the joins in the sunroof frame but will get Tolleys that was suggested. I also have, thanks been using the aircon as it’s not the source of a leak but, as you say, help ensuring it’s dry. As also suggested thanks it could be a leak round the windscreen so I’m taping that up to see if that’s a source. It’s very annoying as a friend of ours also purchased a new L&K Yeti at nearly the same time and theirs is even lower mileage but hasn’t had a leak. They mentioned that they had heard on a forum (not sure if it’s Briskoda) that if cars are not jacked up evenly when changing tyres etc this can result in windscreen leaks due to presumably the adhesive issue and/or sunroof leaks as described by the guy who posted the 7 side attachment and many useful answers. I will update the post after or next set of checks. Thanks, to all.