Lattice results for Heavy-Light matrix elements
  We review recent lattice computations relevant for $D$ and $B$ decays. Decay constants $f_{D,D_s}$, $f_{B,B_s}$, $D\rightarrow K (K^*)$, $B\rightarrow \pi , \rho$ semi-leptonic form factors together with the slope of the Isgur-Wise function calculations are presented. Some recent results of $B\rightarrow K^* \gamma$ form factors will be given. $1/M$ corrections to the asymptotic scaling laws are discussed. 
As. Abada (for the APE, ELC and UKQCD Collaborations)