(Top) The global hyperon polarisation (\ph) as a function of collision energy compared with the STAR data at lower energies~. The insert shows zoomed-in comparison with the data at the top RHIC energy. The systematic uncertainties are shown as shaded boxes. Points are slightly shifted along the horizontal axis for better visibility. (Bottom) Centrality dependence of the hyperon polarisation component along the beam direction $P_z$ measured in Pb--Pb collisions at $\sNN=$ 5.02~TeV compared with STAR data and two hydrodynamic calculations~.