  A measurement of the $CP$-violating observables from $B^{\pm}\rightarrow D^*
K^{\pm}$ and $B^{\pm}\rightarrow D^* \pi^{\pm}$ decays is presented, where $D^*
(D) $ is an admixture of $D^{*0}$ and $\bar{D}^{*0}$ ($D^0$ and $\bar{D}^0$)
states and is reconstructed through the decay chains $ D^* \rightarrow
D\pi^0/\gamma$ and $D \to K_S^0 \pi^+\pi^-/K_S^0 K^+K^-$. The measurement is
performed by analysing the signal yield variation across the $D$ decay phase
space and is independent of any amplitude model. The data sample used was
collected by the LHCb experiment in proton-proton collisions and corresponds to
a total integrated luminosity of 9 fb$^{-1}$ at centre-of-mass energies of 7, 8
and 13 TeV. The CKM angle $\gamma$ is determined to be
$(69^{+13}_{-14})^{\circ}$ using the measured $CP$-violating observables. The
hadronic parameters $r^{D^* K^{\pm}}_B, r^{D^* \pi^{\pm}}_B, \delta^{D^*
K^{\pm}}_B, \delta^{D^* \pi^{\pm}}_B$, which are the ratios and strong phase
differences between favoured and suppressed $B^{\pm}$ decays, are also
reported.
