The Press Kit for 'Parade's End', given out at the press conference in Belgium on October 9th.  It's going to be filmed in Flanders.

The character Anne-Marie is playing:
Mrs. Edith Duchemin

Some information on the character:

Valentine’s closest friend Edith Duchemin is trapped in a loveless marriage to an insane clergyman until her affair with Vincent MacMaster transports her to a glamorous new world of politics and literary parties. Her life is transformed, but as her old vulnerability hardens into a malicious streak, it becomes increasingly clear that she doesn’t plan to take Valentine with her.

Stephen Graham is Vincent MacMaster:

Christopher’s colleague and confidant Vincent MacMaster is a civil servant and amateur critic. His recently published essays on Rossetti have earned him a place on the London literary circuit, and he embraces this new status, throwing elaborate parties for artists and writers. While Christopher wrestles with his conscience, MacMaster is impulsive and has no trouble beginning an affair with Edith Duchemin - despite the fact that Edith is already married to a deranged reverend.

The Cast List is on Page 22 ( the press kit is in Flemish, the cast list is in English). 

Link: http://www.vrt.be/sites/default/files/attachments/PARADESEND_PERSNL_DEF.pdf