The inclusive production rates and differential cross-sections of photons and mesons with a final state containing photons have been measured with the OPAL detector at LEP. The light mesons covered by the measurements are the π0π0 , ηη , ρ(770)±ρ(770)± , ω(782)ω(782) , η′(958)η′(958) and a 0(980)±0(980)± . The particle multiplicities per hadronic Z 00 decay, extrapolated to the full energy range, are: where the first errors are statistical and the second systematic. In general, the results are in agreement with the predictions of the JETSET and HERWIG Monte Carlo models.