Hyde-White was born in London, the son of Ethel M. (née Korenman), a stage manager who acted under the name Ethel Drew, and the actor Wilfrid Hyde-White. Known as Punch to friends, he grew up in Palm Springs, California attending Palm Springs High School (Class of 1975) and Georgetown University in Washington, D.C. for one year after which he left to pursue the inevitable acting career. Hyde-White was married to actress Karen Dotrice, daughter of actor Roy Dotrice from 1986 until 1992. They have a son Garrick. He is married to Shelly Hyde-White and resides in Santa Monica, California. They have a son Jackson Hyde-White. Jackson is currently attending Santa Monica High School.
Under contract to Universal Pictures at age 18, his first television job was one line "leave my mother alone" spoken to star Jack Klugman on the television series Quincy M.E. He recurred in several episodes, each time as a different character and also made numerous appearances in Battlestar Galactica and later Buck Rogers in the 25th Century which also featured his father Wilfrid. The only time both father and son appeared on screen together was on The Merv Griffin Show in 1980. A clip from that show is featured in his film Three Days of Hamlet.
In 1994 he played the Marvel Comics superhero Reed Richards, a.k.a. Mister Fantastic, in a motion picture adaptation of Marvel's flagship comics series The Fantastic Four. The film was low budget and made by certain parties in order to retain the film rights to the property; thus, it was never released. But bootleg copies of the film made the rounds, and the film has acquired its own following. Hyde-White is regarded by many comics fans as the best embodiment of the character, who has since been played by Ioan Gruffudd and Miles Teller.
Through his production company TMG, named after his mentor, Washington attorney Steven Martindale, he produced the 2002 independent romantic drama, Pursuit of Happiness which starred Frank Whaley, Annabeth Gish, Adam Baldwin and featured comedian Jean Stapleton in a cameo as the advertising agency's owner. Stapleton's son John Putch was the director. Putch had directed Alex prior in Deep Water and since in Murder 101 starring comedian Dick Van Dyke for Hallmark. Alex has worked with Steven Spielberg twice, Indiana Jones and the Last Crusade as Young Henry Jones Senior and Catch Me If You Can.
Hyde-White directed the TMG production Three Days, from Universal City-based Ytinifni Pictures, headed by David Suarez. Also starring Peter Woodward, Richard Chamberlain and Stefanie Powers, the experimental first-person doc weaves a hero's journey from the most unlikely of arenas as it follows a troupe of actors who gather for three days to rehearse and perform a staged reading of Shakespeare's Hamlet. The film won Best Documentary at three festivals, International Family Film Festival (Hollywood, Spring 2012), L-Dub (Lake Worth, FL, Fall 2012), and Eugene Int'l Film Festival (Oregon, Fall 2012).
His production company, TMG, is developing a few projects for both the big and small screen. One is the existentialist crime novel King of Infinite Space with the book's author Tyler Dilts, as an independent film. Screenwriter Peter Woodward is adapting the novel. The film is called Signal Hill. It is the first in the Danny Beckett series from Long Beach State professor Dilts. Another is Printer of Udell's based on the early 20th century novel by William Bell Wright.
His audiobook production company is Punch Audio and they are servicing the growing audiobook market through Audible with such titles as Paladins by Joel Rosenberg, Miracle At Merion: Ben Hogan's 1950 Comeback by David Barrett, I Am John Galt, These Precious Hours by Michael Corrigan, and Jesus: The Missing Years by Walter Parks. Other artists at Punch Audio include the British actor Ian Hart, and actresses Mary Jane Wells, Liane Curtis and Kate Huffman. They recently produced for Audible five novels by the late British author Alec Waugh including the novel Island in the Sun which was adapted into the 1957 hit film of the same name starring James Mason, Harry Belafonte and Joan Collins. Fellow actor friends Juliet Mills and Maxwell Caulfield voiced Love In These Days and My Brother Evelyn and Other Stories.2012 – Three Days of Hamlet
2012 – Game Change - Sen. Lindsey Graham (R-SC)
2011 – Night Club
2011 – The Mentalist
2011 – Dexter
2011 – The Christmas Pageant
2011 – The Adventures of Tintin: Secret of the Unicorn
2005 – See Arnold Run
2003 – Gods and Generals
2002 – Catch Me If You Can
1995 – The Alien Within
1995 – Babylon 5 (season 2, episode "In the Shadow of Z'ha'dum")
1994 – The Fantastic Four
1990 – Pretty Woman
1989 – Indiana Jones and the Last Crusade
1988 – Supercarrier – Lt Dave "Hat Trick" Rawley
1986 – Biggles: Adventures in Time – Jim Ferguson
1984 – The First Olympics: Athens 1896 – Arthur Blake
1982 – The Toy
1982 – The Tragedy of Romeo and Juliet
1982/83 – Voyagers!
1979/81 – Buck Rogers in the 25th Century (season 2)
1979 – The Seekers
1978 – Battlestar Galactica