Get alerts:Group Chief Executive Anthony Kirby said revenue rose 4% on a constant-currency basis, while underlying operating profit increased to £157 million. Underlying operating profit rose 8% to £157 million and the underlying operating margin improved 20 basis points to 6.2%, which the company described as a 10-year high. Underlying operating profit increased 10% to £84 million and margin reached 10.8%. Revenue grew organically by 7%, led by 30% defense revenue growth as Serco mobilized its Royal Navy maritime support and vessel replacement contract. Underlying operating profit declined 12% to £6 million, but margin increased by more than 100 basis points to 8.5%.