This document discusses a case study of lobbying efforts by the Women on Farms Project (WFP) targeting Tesco, the largest supermarket in the UK. WFP had reported labour rights violations on farms supplying Tesco, but Tesco dismissed these reports. WFP's strategy involved a farm worker publicly sharing her experiences at Tesco's annual general meeting, gaining significant media coverage. This led to Tesco's chairperson meeting with WFP and the worker, and agreeing to audit all farms supplying Tesco to ensure compliance with labour laws. The document outlines lessons from this successful campaign, such as garnering support from partners, empowering affected people, utilizing media, and identifying the target's vulnerabilities.