In the event that someone has stolen and reuploaded your content, you can request that the video be taken down. Please note that not all copyrighted content is eligible for removal as some videos may be protected by fair use or similar laws, you can learn more here.
If you would like to proceed with requesting to have the video removed, you will need to fill out this form. Alternatively, you can send an email to copyright@youtube.com with the information outlined on this YouTube Help Center article.
As an alternative option, you can contact BBTV's Partner Experience Team (support@bbtv.com) to request a manual claim be placed or the video blocked on your behalf. Offering this type of service would be dependent on the nature of the content and your ability to prove that the content is yours, it is decided on a case by case basis.