identified by their optical morphology – only objects which appear point-like are fitted with AGN templates. This reduces the risk of catastrophic outliers occurring when normal galaxies are erroneously fitted with AGN templates, but does mean that some AGN will be misclassified as normal galaxies. The main difference between the RR13 catalogue and the previous 2008 version is the treatment of AGNs, as dust torus emission is now included in the quasar templates. The RR13 catalogue only contains redshift values for objects which were included in the original SWIRE photometric redshift catalogue [@2008MNRAS.386..697R], so does not include redshifts for every object in the Data Fusion catalogue. There are also a small number of objects in the RR13 catalogue which are not in the Data Fusion catalogue as these appear in the original SWIRE redshift catalogue.

RR13 contains redshift estimates for 1,009,607 sources in all eight of the SWIRE fields and covers all but a small section of the 10C Lockman Hole field.

Matching the catalogues {#section:fused-matching}
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Morphology of the radio sources
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Due to the high density of sources in the Data Fusion catalogue it is necessary to take into account the structure of the radio sources when matching 