  We present results for the light meson masses, the bare strange quark mass
and preliminary non-perturbative renormalisation of B_K in 2+1 flavour domain
wall QCD. The ensembles used were generated with the Iwasaki gauge action and
have a volume of 16^3 x 32 with a fifth dimension size of 16 and an inverse
lattice spacing of 1.6 GeV. These ensembles have u and d masses as low as one
quarter of the strange quark mass. All data were generated jointly by the UKQCD
and RBC collaborations on QCDOC machines.
