Hadronic $b$ decays to open charm and a measurement of the CKM angle $\gamma$

The LHCb detector is a general purpose forward spectrometer at the Large Hadron Collider, which exploits the $\approx$ 300 b cross-section for $b\bar{b}$ production in 7 TeV proton-proton collisions to make precise measurements of b-hadron properties. The following results, all based on a $1 fb^{-1}$ data sample, are presented here : precision measurements of branching fractions and first observations of B meson decays to doubly charmed nal states; searches for rare B meson decays to open charm nal states; and a measurement of the CKM angle $\gamma$.