Precision measurements of CP violating observables in the mixing and decay of B mesons provide excellent opportunities to search for possible contributions from New Physics beyond the Standard Model. In these proceedings, key measurements pursued by the LHCb collaboration at CERN’s Large Hadron Collider (LHC) are described. Results obtained from the analysis of data collected in 2011 already match or even surpass the measurements of previous experiments in their precision. All results obtained so far are compatible with Standard Model predictions, hints for possible deviations reported by previous experiments are not confirmed. All results are dominated by statistical uncertainties and significant improvements are expected from analysing la...