Aggressive Opening Repertoire?

What are your recommendations for an attacking/dangerous repertoire for both sides?

Any opening variation which is considered "sharp" is dangerous for both sides. The "problem" with such openings is that they can rarely be forced. If one side wants to avoid sharp play, then they typically can. 

The alternative for "aggressive" is probably to play gambits, but this has limited impact and at a certain level, dubious gambits work successfully less and less frequently. If you research "sharp" chess openings, this will probably give you some examples. Otherwise, here are a few randomly off the top of my head:

Sicilian Defense: Poisoned Pawn Variation

Semi-Slav Defense: Anti-Moscow lines

Grunfeld Defense mainlines

Ruy Lopez, Marshall Attack

Nimzo-Indian Defense (doesn't have to be sharp, but the imbalances of this opening often turn sharp)

If you talk about agressive players, then Tal, Fischer, Kasparov spring to mind.
They played:
Najdorf Sicilian as black
King's Indian Defense as black
Ruy Lopez as white

For white you might find Summerscale/Johnsen (2010) A Killer Chess Opening Repertoire to be more "aggressive" than the London. Since they also begin with 1.d4, you can continue to play the London and switch to their repertoire gradually. http://gambitbooks.com/books/A_Killer_Chess_Opening_Repertoire_-_new_enlarged_edition.html

For black I agree with KeSetoKaiba. Nothing wrong with the French and the QGD, and those even have "aggressive" variations, for example French Winawer or MacCutcheon, QGD Manhattan (sideline of Ragozin) or Tarrasch. There's not much you can do in any black repertoire if white wants to take the life out of the game. The solution to the Exchange French and similar sterile variations is to outplay them in the middle-game or endgame.

ChessDojo on YouTube has a really solid aggressive repertoire series that I'd recommend.

For really aggressive/attacking play, go for gambits.

I like King’s Gambit and Smith Morra as white. As black it’s not so easy to be aggressive, but I have fun with Scandinavian (2. ... Nf6 flavor), and Budapest Gambit.