  We present the first Swift Ultraviolet/Optical Telescope Serendipitous Source
Catalogue (UVOTSSC). The catalogue was compiled from 23,059 Swift datasets
taken within the first five years of observations with the Swift UVOT. A
purpose-built processing pipeline, based around the standard Swift processing
tools, was employed. The catalogue contains positions, photometry in three UV
and three optical bands, morphological information and data quality flags. In
total, the catalogue contains 6,200,016 unique sources of which more than 2
million have multiple observations in the catalogue.
