Against 1.e4, there isn't anything similar.
The London System is basically a reverse Slav Defense while the Colle-Koltanowski is a reverse Semi-Slav.
So your best bet is the Slav Defense, but make sure you get a few books on the Slav first. For example, you often cannot play Bf5 until either White has played e3 or Black has taken on c4.
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.e3 Bf5
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 Bf5? (4...dxc4 or 4...e6 is necessary) 5.cxd5! cxd5 6.Qb3 Bc8 with a clear advantage for White.
Basically I have an opening for black that I feel does not really work at high level (OTB) chess anymore
When playing as White I play some form of London and I feel that generally works well - I have even drew an 1800+ rated player as a low 1400 when playing as white
I think I need a new opening for Black though as I was lost by move 20 or even before
How do you do a London type opening as Black? Whats it called?