The worst that will happen it will get removed. I have put up BBC series trailer and not had a problem, unlike this morning with US channel AMC
Intellectual property: protecting BBC copyright and trademarks
The BBC wishes to protect its own material particularly if it is likely to be commercially exploited by others online. This extends to web site content and to domain names (urls or web site addresses) whether or not they are connected to a site.
However, at the same time the BBC does not want to discourage genuine "fan sites", provided these do not confuse the public into thinking they are official BBC sites or encourage large scale copying of BBC material. Appropriate copyright and trademark notices should be used on sites to indicate BBC ownership of material. Domain names should be considered for early registration in accordance with the BBC's Domain Name Policy for programme and channel names, services and products and other key brands. The policy is managed by Technical Direction.
BBC - Online Services Guidelines - Law - Intellectual property: protecting BBC copyright and trademarks