| Non-current assets | 26.39a | 20.29a |
| Goodwill | 13.3a | 11.39a |
| Other intangible assets | 2.97a | 0.71a |
| Property, plant and equipment | 4.84a | 3.64a |
| Right-of-use assets | 1.76a | 1.31a |
| Investment property | 0.04a | 0.06a |
| Equity accounted investments | 0.82a | 0.83a |
| Other investments | 0.08a | 0.08a |
| Contract and other receivables | 0.73a | 0.63a |
| Post-employment benefit surpluses | 1.27a | 0.8a |
| Other financial assets | 0.27a | 0.23a |
| Deferred tax assets | 0.32a | 0.61a |
| Inventories | 1.32a | 1.16a |
| Trade, contract and other receivables | 6.66a | 6.19a |
| Current tax | 0.18a | 0.16a |
| Other financial assets | 0.21a | 0.21a |
| Cash and cash equivalents | 3.38a | 4.07a |
| Current assets | 11.75a | 11.77a |
| Total assets | 38.14a | 32.06a |
| Loans | -7.71a | -4.43a |
| Lease liabilities | -1.66a | -1.27a |
| Contract liabilities | -1.72a | -1.96a |
| Other payables | -1.86a | -1.59a |
| Post-employment benefit obligations | -0.5a | -0.58a |
| Other financial liabilities | -0.19a | -0.23a |
| Deferred tax liabilities | -0.01a | -0.01a |
| Provisions | -0.36a | -0.33a |
| Non-current liabilities | -14.02a | -10.4a |
| Loans | -0.7a | -0.68a |
| Lease liabilities | -0.18a | -0.15a |
| Contract liabilities | -4.5a | -3.87a |
| Trade and other payables | -6.38a | -5.44a |
| Other financial liabilities | -0.26a | -0.3a |
| Current tax | -0.06a | -0.29a |
| Provisions | -0.25a | -0.24a |
| Current liabilities | -12.34a | -10.94a |
| Total liabilities | -26.37a | -21.34a |
| Net assets | 11.78a | 10.72a |
| Capital and reserves | — | — |
| Issued share capital | 0.08a | 0.08a |
| Share premium | 1.25a | 1.25a |
| Other reserves | 6.45a | 6.4a |
| Retained earnings | 3.84a | 2.82a |
| Total equity attributable to equity holders of BAE Systems plc | 11.62a | 10.56a |
| Non-controlling interests | 0.16a | 0.16a |
| Total equity | 11.78a | 10.72a |