Question: Who worked with animation producer George Dunning and worked as Eric Porter's animation director?

Context paragraphs:
Marco Polo Junior Versus the Red Dragon: Marco Polo Junior Versus the Red Dragon is a 1972 Australian animated musical adventure film directed by Eric Porter, written by Sheldon Moldoff, and was the country's first animated feature film.  The two sequence directors were Porter's animation director Cam Ford (who had previously worked on the Beatles' "Yellow Submarine") and Peter Gardiner.

Yellow Submarine (film): Yellow Submarine (also known as The Beatles: Yellow Submarine) is a 1968 British animated musical fantasy comedy film inspired by the music of the Beatles, directed by animation producer George Dunning, and produced by United Artists and King Features Syndicate.  Initial press reports stated that the Beatles themselves would provide their own character voices; however, aside from composing and performing the songs, the real Beatles participated only in the closing scene of the film, while their cartoon counterparts were voiced by other actors.

Animation director: An animation director is the director in charge of all aspects of the animation process during the production of an animated film or an animated segment for a live-action film.  This may include directing the storyboard, character design, background animation, and other aspects of animation.  Some animated film productions may split the duties between an Animation Director, who focuses on the creation of the animation, and a Director who oversees on all other aspects of the film.  A supervising animator is commonly in charge of all aspects of the design and artwork for a single major character.  The supervising animator oversees a group of animators who complete the entire scenes in which a particular character appears.

Bill Schultz (producer): Bill Schultz (born June 11, 1960) is an animation producer.  He was born in New York City and grew up in River Forest, a suburb near Chicago, Illinois, moving to Los Angeles after graduating from the University of Illinois Champaign - Urbana Campus.  He has worked on television shows such as "Jim Henson's Muppet Babies", "The Transformers", and produced others, notably "The Simpsons", "King of the Hill" and now the founder and CEO of Home Plate Entertainment, the Animation Studio behind Rob Dyrdek's Wild Grinders (launched on Nicktoons in the US in September 2011).  Schultz started Home Plate Entertainment in 2010, after stepping down from his 12 year partnership with Moonscoop LLC (f/k/a Mike Young Productions (MYP) and Taffy entertainment, the US based arm of French animation studio Moonscoop SAS.

Eric Porter (filmmaker): Eric Porter (born in June 19, 1911–death in May 1, 1983) was an Australian filmmaker and animator who specialised in documentaries and commercials, but also made several features.  He directed Australia's first animated feature, "Marco Polo Junior Versus the Red Dragon" (1972).  That film's financial failure forced him to close his animation studio.

Marco Marenghi: Marco Marenghi is a Welsh film animator/director who was born in Rhondda in Wales.  He graduated from the University of Wales with an HNC in Electronics, and he worked for a microelectronics firm in Rhondda.  He was laid off due to redundancy, and he briefly worked as a TV repairman before becoming unemployed.  His wife encouraged him to take an animation course at the University of Glamorgan.  After graduating with an HND in Animation, he worked for Framestore for four years on projects including the James Bond film "Tomorrow Never Dies" (1997) and the BBC television miniseries "Walking with Dinosaurs" (1999).  DreamWorks hired Marenghi to work on films including "Minority Report" (2002).  He moved to Sony Pictures Imageworks, where he worked as animation supervisor on films including "I Am Legend" (2007) and "Ghost Rider" (2007).  He also worked as an animation director for Animal Logic for the film "Walking with Dinosaurs" (2013).  The BBC featured Marenghi's dramatic career change and inspirational story in the documentary On Show: The Marco Marenghi Story (2004).

Brian Sheesley: Brian Sheesley (born 6 April 1959) is an animation director who has worked on several comedy shows, including directing duties on "The Grim Adventures of Billy & Mandy", two episodes of "The Critic", nine episodes of "Futurama" and two episodes of "King of the Hill".  Sheesley also worked as an animation timer on "Rugrats Go Wild! " (in 2003) and as an animator on "A Wish for Wings That Work" in 1991.  In his earlier career Brian worked as a layout artist on "The Ren & Stimpy Show".  Brian was an animation director and supervising director on "Camp Lazlo", and recently an animation director on "Regular Show", "Sym-Bionic Titan" and "Uncle Grandpa".  He studied in the Character Animation program at the California Institute of the Arts.

Andreas Hykade: Andreas Hykade (born 1968 in Altötting, Bavaria) is an animation director from Germany.  Before studying at the Academy of Fine Arts in Stuttgart from 1988 to 1990, he attended König-Karlmann-Gymnasium Altötting.  He worked as an animator in London in 1991, then studied animation at the Filmakademie Baden-Württemberg until 1995.  Since then he works as animation director, partly at "Studio Filmbilder" in Stuttgart, and as the Professor for Animation at the Filmakademie Baden-Württemberg.

Topcraft: Topcraft (トップクラフト, also written "Top Craft") was a Japanese anime studio established in 1971 by former Toei Animation producer Toru Hara.  It was famous for doing animation for hand-drawn animation titles by Rankin/Bass and for the production of "Nausicaä of the Valley of the Wind" and "".  The studio went bankrupt and dissolved in June 15, 1985 essentially splitting the studio in half.  Hayao Miyazaki, Toshio Suzuki and Isao Takahata bought the studio when laying off most of its animation staff and changed its name to Studio Ghibli.  .  Topcraft's animators later formed another studio called Pacific Animation Corporation to continue to work with Rankin/Bass on shows like "ThunderCats" and "Silverhawks" but eventually joined Ghibli once the studio was bought out by Disney and became Walt Disney Animation Japan.  Some animators like Tsuguyuki Kubo went to work for other anime studios such as Studio Pierrot working on "Naruto" and "Bleach" for them.  In the end the buy out of Topcraft made the studio into the birth of Studio Ghibli.  Topcraft's founder Toru Hara became Studio Ghibli's first manager.

History of British animation: The history of animation in the United Kingdom began at the very origins of the artform in the late 19th century.  British animation has been strengthened by an influx of émigrés to the UK, renowned animators such as Lotte Reiniger (Germany), John Halas (Hungary), George Dunning and Richard Williams (Canada), Terry Gilliam and Tim Burton (USA) have all worked in the UK at various stages of their careers.  Notable full-length animated features to be produced in the UK include Animal Farm (1954), Yellow Submarine (1968), Watership Down (1978), and (2005).

Supporting paragraphs: Marco Polo Junior Versus the Red Dragon Yellow Submarine (film)
Answer: Cam Ford