Extragalactic Representative Volume Survey (SERVS; @2012PASP..124..714M) is a warm Spitzer survey which imaged $\approx~18~\rm deg^2$ using the 3.6 and 4.5 $\muup$m IRAC bands down to an rms noise of $0.4~\muup$Jy. The SERVS Data Fusion is a multi-wavelength infrared-selected catalogue compiled by Vaccari et al. (in preparation, `www.mattiavaccari.net/df`) containing most of the multi-wavelength public photometry and spectroscopy for SERVS sources within the Lockman Hole and other SERVS fields. For inclusion in the SERVS Data Fusion, a source must be detected at either 3.6 or 4.5 $\muup$m in the SERVS images, and ancillary datasets are matched against the SERVS position using a search radius of 1 arcsec. In the Lockman Hole, the SERVS Data Fusion includes optical photometry by @2011MNRAS.416..927G (GS11), near-infrared photometry from the United Kingdom Infrared Telescope (UKIRT) Infrared Deep Sky Survey (UKIDSS; see @2007MNRAS.379.1599L) and mid-infrared and far-infrared photometry from the Spitzer Wide-Area Infrared Extragalactic survey (SWIRE; see @2003PASP..115..897L).

The GS11 deep optical data were taken with the Wide Field Camera (WFC) at the Isaac Newton Telescope (INT) and the Mosaic-1 camera on the Mayall 4-meter Telescope at the Kitt-Peak National Observatory (KPNO) in $g$, $r$, $i$ and $z$-bands. The average magnitude limits in the $g$, $r$, $i$ and 