I recently procured a theatre programme from Out of Joint theatre company's production of J.T. Rogers' "The Overwhelming" (a play about an author uprooting his family and moving his family to Rwanda to write a book, and becoming embroiled in the conflict there.
This particular production toured throughout the UK September/October 2006, starring Matthew Marsh (Spooks) as Jack Exley, the patriarch of the family, and none other than Andrew Garfield as Geoffrey Exley, Jack's son.
Even in his theatre work, Andrew was considered as an emerging new talent with masses of potential, to which these reviews here clearly attest:
Chris High - Reviews
British Theatre Guide - Review