We present a spectroscopic survey of almost 15 000 candidate intermediate-redshift luminous red galaxies (LRGs) brighter than i = 19.8, observed with 2
dF and the AAOmega spectrographs at the Anglo-Australian Telescope. We use the AAOmega LRG sample to investigate the evolution of the galaxy population at intermediate redshifts. We find that the LRG population is dominated by a single population of galaxies with a mean redshift of z = 0.55 ± 0