The movies Jack Davenport has appeared in are listed "newest first".

We'll try to complete the list within the next months, but will focus on his current projects for the time being.
Americana (2015)
Calib

The Tank (2015)
Will Sacks

Kingsman: The Secret Service (2014)
Lancelot

Mother's Milk (2011)
Patrick

The Key Man (2011)
Bobby

That Deadwood Feeling (2004/2009)
Frank

The Boat That Rocked (2009)
"Twatt" (no kidding!)

Pirates of the Caribbean: At World's End (2007)
Admiral James Norrington

Pirates of the Caribbean: Dead Man's Chest (2006)
Commodore James Norrington

The Wedding Date (2005)
Edward Fletcher-Wooten

The Libertine (2004)
Harris

Pirates of the Caribbean: The Curse of the Black Pearl (2003)
Commodore James Norrington

The Bunker (2001)
LCpl. Ebert

Not Afraid, Not Afraid (2001)
Michael

Gypsy Woman (2001)
Leon

The Talented Mr. Ripley (1999)
Peter Smith-Kingsley

The Wisdom of Crocodiles (1998)
Sergeant Roche

Talos, the Mummy (1998)
Detective Bartone

Fierce Creatures (1997)
Student Zoo Keeper