We use cobordism theory to analyse anomalies of finite non-abelian symmetries in 4 spacetime dimensions. By applying the method `anomaly interplay', which uses functoriality and naturality $\eta$-invariant relate a group interest other (finite or compact Lie) groups, we derive anomaly for every representation many examples motivated by flavour physics, including $S_3$, $A_4$, $Q_8$, $\mathrm{SL...