He has also appeared in television series such as Nurse Jackie, L.A. Law, Boardwalk Empire, The Knick, Tommy, Severance, and Barry.
[2] He later returned to England and attended Haileybury College in Hertford Heath, before relocating to the U.S. and receiving a BA in English from the University of North Carolina at Chapel Hill in 1982.
[16] Cumpsty's television credits include daytime soap operas such as One Life to Live and All My Children, recurring roles on the primetime dramas L.A. Law in 1991 as "killer litigator" Frank Kittridge,[17] Severance as Security Chief Doug Graner, and Star Trek: Voyager as the holographic Lord Burleigh, and guest appearances on Matlock,[18] The OA, and Law & Order.
It's kind of special..."[2] He further said that he likes "language oriented work" and mentioned as examples Copenhagen and the plays of Tom Stoppard.
Cumpsty has lived in New Jersey with his boyfriend John Dias, artistic director of the Two River Theater Company in Red Bank, since 2010.