Married Matthew Macfadyen in a very private ceremony in their local Registry Office in November 2004.

She was spotted in Oxford Street in London by an agent who inquired if she modeled. She began her modeling career from that point on and continued for nearly a year, before being cast in her first movie role, "Karaoke" (1996) (mini).

Attended the Sylvia Young Theater School which also produced stars Emma Bunton (Spice Girls) and Nick Berry.

Youngest of four children.

Son, Myles (born 2000) with first husband Spencer McCallum

Her dad and two brothers are all London cabbies.

Gave birth to a healthy little girl named Maggie just before Christmas 2004

Keeley left her husband just after 5 months of marriage. She began dating Matthew Macfadyen (her co-star from the BBC TV series "Spooks" (2002)) shortly after but maintains she never had an affair whilst married to McCallum.

Gave birth to son Ralph in September 2006.