<Tr> <Th> Products </Th> <Td> Electricity and Natural gas </Td> </Tr> <Tr> <Th> Revenue </Th> <Td> £ 5,446.1 million (2006) </Td> </Tr> <Tr> <Th> Operating income </Th> <Td> £ 869.7 million (2006) </Td> </Tr> <Tr> <Th> Net income </Th> <Td> £ 507.7 million (2006) </Td> </Tr>

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