  We present results for light meson masses and psedoscalar meson decay
constants in 2+1 flavour domain wall QCD with the DBW2 and Iwasaki gauge
actions, using lattices with linear sizes in the range 1.6 to 2.2fm and $u$ and
$d$ quark masses as low as one quarter of the strange quark mass. All data were
generated on the QCDOC machines at the University of Edinburgh and Brookhaven
National Laboratory. Despite large residual masses and a limited number of sea
quark mass values with which to perform chiral extrapolations, our results
agree with experiment and scale within errors.
