  {Since the start of the Large Hadron Collider program, direct searches for
Beyond Standard Model (BSM) particles have constrained their mass scale to
limits which are now above the energy reach of the current collider. As a
result, studies of indirect probes of BSM physics have gained a considerable
momentum, both experimentally and theoretically. The flavour anomalies in $b$
hadron decays are now recognized as an important laboratory for the indirect
detection of BSM physics. This short review presents several key analyses in
this area, and some prospects with future data.
