Examples of the SED fitting used to derive stellar masses and star-formation rates, selected to demonstrate the diversity in the SEDs of the X-ray sample. The star-formation component is plotted in red, the AGN component in blue, and the stellar component in green. In magenta we plot the combination fitted to the data-points. The stellar component is only confined by the optical wavelengths where it usually dominates the flux, but there are cases where we detect a substantial AGN contribution. The star-formation component is confined by the FIR flux with rest-frame wavelength  >20   μm, and again there are cases where the FIR flux is dominated by the AGN. With downward arrows we plot far-IR upper limits (see Sect. 3.3), where the resulting starburst component is plotted with a dashed line. The numbering in the top-right corners of the panels refers to the preliminary XMM-Newton catalogue number.