This British Geological Survey (BGS) marine geophysical survey took place in Loch Lomond on board the RV White Ribbon. The aim was the analysis of glacial geomorphology and activity within the area, and sedimentary signals from the Last Glacial Maximum (LGM) to present day. The survey took place over 3 periods using 3 different seismic systems for comparison. Phase 1: 28 -30 May 2014 - Knudsen Pinger system, Phase 2: 10-16 July 2014 - Edgetech 3100 216s Chirp system and Phase 3: 21-23 July 2014 - Applied Acoustics surface tow boomer. This survey data complements multibeam bathymetry data acquired on survey 2007/8. These data are archived by BGS. Technical details of the survey are contained in the BGS Report of Survey.