Check out Uncharted Waters for a plethora of Voyage fics, including mine. I write mostly all Admiral Nelson but there's at least a couple of Harry and Lee (gen, not slash) fics. Here's a link to the site and the author's list. I write under Debbie H but I highly recommend everything by Kathleen Lehew (read Contents Under Pressure, my pick for best Voyage fic ever).

Also, I have to pimp the series Kathleen and I co-wrote because Kathleen is an amazing writer and makes me look good. Start with Chicxulub, then An Irregular Encounter, A Dish Best Served Cold, Path of Thorns and then finish with The Place of Fear and Awe.

Btw, Kathleen is a Dr. Who fan and has written a Seven and Ace fic (that's the Who for you, right?). Here's the link if you'd like to check it out. Variations on a Theme