Complex sentence: Channel 4 +1 is the timeshift channel for Channel 4, that launched on the 20 Augest 2007, along with E4 +1, More4 +1 and Film4 +1.
Split into simpler sentences: Channel 4 +1 is the timeshift channel for Channel 4. The channel launched on the 20 Augest 2007, along with E4 +1, More4 +1 and Film4 +1.