This work is strategic analysis of 11 PLC (formerly Mobil Oil Nigeria PLC), a publicly quoted petroleum marketing company on the Nigerian Exchange (NGX) and a PhD level work. The research questions are; (1) What is the financial performance and strategic posture of 11 PLC following its acquisition by NIPCO Plc in 2017? and (2) What are the most crucial opportunities and risks facing the company in Nigeria’s deregulated downstream oil and gas sector? The analysis combines the holistic approaches of PESTLE, Porter’s Five Forces and SWOT supported by secondary data from audited annual reports (2016-2025), quarterly filings, regulatory papers (Petroleum Industry Act 2021) and industry reports. Key findings show that 11 PLC experienced compound annual growth in sales of 27% in the decade while profit after tax returned to N27.4 billion in 2025. However, the corporation is under serious threat from foreign exchange volatility, loss of rental income from Mobil House and greater competitiveness following the opening of Dangote Refinery. The analysis indicates that 11 PLC is well-placed to take advantage of opportunities in the gas sector (CNG/LPG) but its long-term viability hinges on rigorous risk control and income diversification. This paper offers a complete, evidence-based instance of strategic flexibility in a dynamic emerging market energy environment.

Keywords: 11 PLC, Nigerian downstream petroleum, strategic analysis, PESTLE, Porter’s Five Forces, PIA 2021, Dangote Refinery, CNG