It has been shown that the anomalies observed in
$$ \overline{B}\to {D}^{\left(\ast \right)}\tau {\overline{\nu}}_{\tau } $$
and
$$ \overline{B}\to \overline{K}{\ell}^{+}{\ell}^{-} $$
decays can be resolved by adding a single scalar or vector leptoquark to the Standard Model, while constraints from other precision measurements in the flavour sector can be satisfied without fine-tuning. To further explore these two interesting scenarios, in this paper, we study their effects in the semi-leptonic
$$ {\v...
