The catalogue contains the sample of 5805 radio AGN described by Mingo et al. 2019, with morphological classifications obtained through the LoMorph code. Please see the paper for details. Column descriptions: Source_Name - source ID as given in LoTSS DR1 RA - source RA as given in LoTSS DR1 DEC - source DEC as given in LoTSS DR1 LM_Size_DC - deconvolved angular size in arcsec, as calculated by LoMorph LM_Flux - total flux in mJy, as calculated by LoMorph Boolean subsets: FR1 - Sources with FRI classification in all size bins FR2 - Sources with FRII classification in all size bins Indeterminate - Sources that do not meet the FRI or FRII classification, in all size bins Small - Sources in the S0 and Unresolved size bins, regardless of classification NAT - Sources with narrow-angle tail visual classification WAT - Sources with wide-angle tail visual classification D-D - Sources with double-double (restarter) visual classification Please note that the FR1 and FR2 subsets encompass the sources in all size bins. For example, to select the most reliable, visually-inspected FRIs in the S1 and S2 size bins, as used for the main science analysis of Mingo et al., the FRI selection should exclude Small sources. The indeterminate class encompasses all classes that are not FRI or FRII, except the double-double restarters, i.e. it includes hybrid candidates, Core-D, fuzzy blobs, small hybrid candidates, sources with potentially bad IDs, and unresolved sources. Note that the WAT and NAT classes are subsets of the FRI class.