McCall became known in the U.S after playing Cpl. Joseph Liebgott in HBO's Band of Brothers for Steven Spielberg and Tom Hanks. He just completed principle photography on the London/New York based show, Suspicion, for Apple TV alongside Uma Thurman, and The Offer for Paramount Plus with Miles Teller and director Dexter Fletcher. He has written and starred in two features that have garnered festival attention and awarded theatrical releases in both the US and the UK. The first, About Us, was officially selected for the Edinburgh Film festival and the second, Ire, which he also directed, found distribution before principle photography was complete. He starred in Aftermath for Netfilx, the Danish feature film The Good Traitor for director Christina Rosendahl, Rome in Love and Tesla, both shot in Italy. Previous feature films include, A Walk to Vegas, Hex, A New York Christmas, multiple award winning The Beautiful Ones (multiple Best Actor wins), It's not you it's me, Willed to kill, A Country Christmas with Dolly Parton, festival favorite AutoMotive with Tessa Thompson, Internationally award winning In Embryo (Best Actor nomination at the Shanghai International Film Festival), SXSW winner Green Street Hooligans with Charlie Hunnam, Green Street Hooligans 2, Serving up Richard, Alpha Males, Trade Routes, Autopsy, LD 50 with Tom Hardy, and Waterland with Jeremy Irons and Ethan Hawk. He also played opposite Tom Hanks in Robert Zemeckis The Polar Express, playing Hanks' scene partner for the entire picture. McCall has worked on many television series including, CSI: NY, The Man, Bones, Ghost Whisperer, Two seasons of the critically acclaimed Crash for Paul Haggis and Glen Mazzara, Luther with Idris Elba, Castle, Season 9 of 24, Lucifer, Fear the Walking Dead and played Matthew Keller on White Collar for 4 seasons. In his youth he played the young Freddie Mercury in the music video The Miracle for the rock group Queen, and continued performing in the London West End theatre district in the stage productions of Oliver!, The King and I, The Lion, The Witch, and The Wardrobe, Charlie and the Chocolate Factory, Les Miserables, and the Neil Simon play, Lost in Yonkers opposite Rosemary Harris. McCall continues to work closely with the conservation group Sea Shepherd, writing and directing the documentary Grind of the Faroe Islands and is a huge supporter of the Elephant rescue center PAWS, in Northern California.