The Northern Rock's collapse in 2007 was a key moment event in the global financial crisis, significantly effected banking sector in the United Kingdom, notably Lloyds Bank Group. The research focuses on the collapse's influence on Lloyds Bank Group's stock returns, assessing both short and long term effects before and after the crisis. Initially, the market reacted with a severe loss of investor confidence, causing a sharp decline in Lloyds' stock prices. The situation worsened in 2008 when Lloyds acquired HBOS, exacerbating financial instability and further depressing stock returns due to integration challenges and increased market volatility. Government bailouts, while necessary to stabilize operations, had the unintended consequence of weakening investor sentiment, further negatively impacting stock prices. Despite these challenges, Lloyds Bank Group demonstrated resilience by gradually recovering from the crisis. Key milestones in the recovery included the repayment of bailout funds and the resumption of dividend payments, which were crucial in rebuilding investor confidence and improving stock performance over time. The research highlights the vulnerabilities within the banking sector and the far-reaching consequences of systemic financial failures. The analysis employs descriptive and analytical methods using Eviews to explore the phenomenon and interpret the findings.................... Keywords:............ Northern Rock bank collapse , Lloyds Banking, Group stock returns , Financial Crisis 2008, Government bailouts and bank stock performance.