(written from a Production point of view)
Paramount Home Entertainment (PHE, formerly Paramount Home Media Distribution, and originally Paramount Home Video and Paramount Video) is the home media format distribution arm of Paramount Pictures.
Until 2007, it distributed all home video products of Star Trek films and television shows. It was founded in 1976 as "Paramount Home Video". One of its first presidents had been Mel Harris, who went on to play a major part in the history of the Star Trek franchise.
Star Trek releases
After the late 2005 split of the old Viacom conglomerate, Paramount lost the Star Trek franchise to CBS Corporation, but continued to distribute Star Trek on home media formats for a time until CBS Home Entertainment took over in 2007; in practice, however, there was little change as CBS continued to distribute home entertainment products through Paramount. Paramount continued to produce Star Trek films, with home media releases of these falling under Paramount.
The UK division of PHE was responsible for Star Trek VHS releases in the UK from 1999 to 2002, and DVD releases from 2002 onward. PHE took over distribution from CIC Video, who were merged into PHE following the end of the joint venture with Universal Pictures.