  We present results for the masses and decay constants of the light mesons in
quenched QCD using the standard gluon action and a tadpole--improved SW--clover
fermionic action to reduce discretisation errors. The calculation has been
carried out at fixed volume and three lattice spacings corresponding to
$\beta=5.7$, $6.0$ and $6.2$. We make comparisons with the conventional
SW--clover scheme. We use our results to extract continuum limits and to
quantify the size of discretisation errors at smaller $\beta$-values.
