Fraction of XXL bright cluster galaxies hosting an X-ray AGN (L_{X [0.5-10 keV]} > 10⁴² erg s⁻¹), divided by the field fraction. The results are plotted as a function of distance from the cluster centre. The sample is divided in two based on cluster mass. Error bars indicate the 1σ confidence limits for small numbers of events (Gehrels 1986). For comparison we plot results from the analyses of massive clusters by Martini et al. (2007, 8 clusters, 0.06 < z < 0.31), Koulouridis & Plionis (2010, 16 clusters, 0.07 < z < 0.28), and Haines et al. (2012, 26 clusters, 0.15 < z < 0.30). A significantAGN excess is found between 0.5r_500,MT and 2r_500,MT, at the 95% confidence level.