[1] In 2003 he wrote the Waking The Dead episode "Multistorey", which won the show an Emmy for Best International Drama Series.
He adapted the book Hallam Foe into a critical well received film, for which he was subsequently nominated at the Moët et Chandon British Independent Film Awards (BIFAs) for Best Screenplay,[2] as well as the BAFTA-winning Sea of Souls, for which he won the Edgar Allan Poe Award for Best Episode in a TV Series.
He created and wrote ITV drama Identity, which was aired on British TV in the summer of 2010; the remake rights were then sold to the ABC Network in America.
He later wrote episodes of CSI and Strike Back, as well as the miniseries Arthur & George and Rillington Place.
Whitmore's work on Manhunt earned him a nomination for the Mystery Writers of America 2020 Edgar Award for Best Television Episode Teleplay.