Complex sentence: There were concerns that the video "invites the viewer to take sadistic pleasure in death" and therefore was not suitable for it's release in the UK, they also deemed the video may be obscene under UK law.
Split into simpler sentences: There were concerns that the video "invites the viewer to take sadistic pleasure in death" and therefore was not suitable for its release in the UK. They also deemed the video may be obscene under UK law.