Awakenings by Lady Anne
Summary: Buffy's parents are killed and she come to live with her uncle, Giles, who is a professor at UC-Sunnydale. There she meets the gang, Willow, Cordelia, Angel, Xander and William and they grow up together. To fulfill provisions in her parent's will, Buffy, accompanied by Willow, goes to England to finish high school and returns 3 years later to find what her future holds for her.
http://www.sinister-attraction.net/stories/l/awakenings.htmBlue Horizons by Kantayra
Summary: AU; everyone's human. All her life Elizabeth has done exactly what everyone expects of her. Now in her first year of college, she discovers the vast possibilities in life. But can she escape the ghosts of her past and find the courage to explore the new paths before her... including the affections of an infuriating young sophomore named William 'Spike' Giles?
http://www.sinister-attraction.net/stories/k/blue.htmSiren's Song by Seredipity
Summary: Fantasy: Buffy is an exotic dancer, Spike, a wealthy lawyer. He wants her, but does she want him?
http://www.sinister-attraction.net/stories/s/sirens.htmSomething Worth Fighting For by Moxie
Summary: William spends two years in prison for a crime he didn't commit and the story begins at the point at which he starts to rebuild his life. He'll find himself working with Buffy for the summer, sparks fly (of course) but she's got to get him to believe in himself again before he can love her. I'm thinking beach side setting, Victorian clapboard houses, antiques shopping, dressing up in costume, oh and a book called The Art of Seduction may make a cameo appearance.
http://www.sinister-attraction.net/stories/m/somethingworth.htmAs You Wish by William's Girl
I don't have a link for this one but it's one of my favorites and I can send it to you as a word doc - just send me an email with your request.