Sustainability is fundamental to our business performance and the delivery of our sustainability agenda is how we address our material Environment, Social and Governance (ESG) risks and opportunities. At BAE Systems, our advanced defence technology protects people and national security, and keeps critical information and infrastructure secure. We search for new ways to provide our customers with a competitive edge across the air, maritime, land and cyber domains. In 2021 BAE Systems reported sales of £21,310 million across its five principal reporting segments of Air; Maritime; Electronic Systems; Platforms and Services (US) and Cyber Intelligence. As of 31 December 2021, the Group had a strong order backlog of £44 billion. BAE Systems has a broad geographic base with business operations in four principal markets around the world, in the US, the UK, the Kingdom of Saudi Arabia and Australia. The company is a top ten defence contractor in the US, the number one supplier to the UK Ministry of Defence, and the number one in-country defence supplier in Saudi Arabia and Australia. The Group has a strong international presence with well-established relationships across the globe, supported by regional sales offices.