||The topic of this article may not meet Wikipedia's notability guidelines for companies and organizations. (November 2009)|
|Key people||Nigel Rennard (Founder)|
|Products||DVD, Blu-ray Disc, Digital Video|
Founder and managing director Nigel Rennard started Siren in 1987 as a music distribution company, and expanded to include VHS distribution in 1994, starting with the distribution of Anime from Manga Entertainment's UK division. It then expanded to acquiring Anime like Astro Boy and Pokémon. It expanded to distribution of Arthouse, Horror and Asian Cinema. In 2001 Siren was no longer a home entertainment distributor and is now solely an acquisition company.
In the early 2000s, Siren repositioned itself as a specialist licensing company. Distribution was outsourced to Shock Records. At the beginning of 2007 Siren parted ways with Shock Records, teaming up with independent sales and distribution company Gryphon Entertainment.
Notable releases 
- Alejandro Jodorowsky's "The Holy Mountain (1973 film)","Fando y Lis" and "El Topo"
- Ruggero Deodato's "Cannibal Holocaust"
- Peter Jackson's "Meet the Feebles"
- Studio 4°C's "Genius Party"  and"Genius Party Beyond"
- Most of the Sentai Filmworks catalog
- Selected Titles from Funimation
- Black Rock Shooter
- Dennou Coil
- Higurashi: When They Cry (Season 1 & 2)
- House of Five Leaves
- Iria: Zeriam the Animation
- Ninja Nonsense
- Now and Then, Here and There
- Tatami Galaxy
- Thermae Romae
- Usagi Drop
- Welcome to Dr. Irabu's Office
- Welcome to the NHK
- X (TV)
- Tiger & Bunny (TV)
- Tiger & Bunny -The Beginning ( Movie)
- Hakaba Kitaro
- Queens Blade
- "Siren Visual". Siren News. Siren Visual. 2009-11-04. Retrieved 2009-11-20.
- "Siren moves to Gryphon". themusic.com.au. www.themusic.com.au. 2009-11-19. Retrieved 2009-11-19.