Violence is a preventable public health problem and yet there are over one million violent incidents each year in England and Wales, approximately half of which involve alcohol and one quarter of which occur in night time economy environments. Between April 2013 and March 2016 there were 14,427 injury attendances to Lancashire Accident and Emergency Departments (AEDs) by residents of Lancashire for injuries sustained from violence. This TIIG Lancashire report presents data and analyses relating to alcohol-related violence; where data were recorded, alcohol was consumed prior to an assault attendance in 44% of incidents. This report presents AED attendances for violence across Lancashire in terms of demographics, area of residence, attendance rates and attendance information (including incident location, referral source, arrival mode and disposal method) between April 2013 and March 2016. Using alcohol-related data collected by two of the trusts, case studies are also provided for Chorley, Preston, South Ribble and West Lancashire local authorities.