UK TV chat girls are a goldmine for thong slips, here are a few great examples, and feel free to contribute your findings / favourites enjoy;
https://www.pornhub.com/view_video.php?viewkey=ph5a76edcf172ac
https://www.pornhub.com/view_video.php?viewkey=ph5a7d8e338c313
https://www.pornhub.com/view_video.php?viewkey=ph5c2f94ad9d627
https://www.pornhub.com/view_video.php?viewkey=ph5a76edcf172ac
https://www.pornhub.com/view_video.php?viewkey=ph5a7d8e338c313
https://www.pornhub.com/view_video.php?viewkey=ph5c2f94ad9d627