Complex sentence: The Co-operative Group has been based in Manchester since inception in 1863 and will celebrate its 150th anniversary in 2013, by which time the Group will have moved into the £100m The Co-operative Group Headquarter Building at NOMA in Manchester which is currently under construction.
Split into simpler sentences: The Co-operative Group has been based in Manchester since inception in 1863 and will celebrate its 150th anniversary in 2013. The Group is move into the new £100m The Co-operative Group Headquarter Building at NOMA in Manchester which is currently under construction.