Studies of quarkonia production and polarisation at LHCb

Studies of quarkonia production in the forward region provide important tests of NRQCD. The LHCb experiment has collected a dataset corresponding to an integrated luminosity of about 3 fb$^{-1}$ in proton-proton collisions at $\sqrt{s}$= 7 and 8 TeV. We present studies of the production and polarisation of the $J/\psi, \psi$(2S) and $\chi_c$ charmonium states as well as those of $\Upsilon$ and $\chi_b$ bottomonia. Absolute and relative production cross-sections are presented and compared to the most recent theoretical predictions when available. We also discuss the future prospects for these measurements.