Fighter jet boosts Lockheed Martin

Lockheed Martin boosted its profit forecast as production of its controversial F-35 stealth fighter increases. The world’s biggest defence firm upgraded expectations as it posted half-year figures, which showed revenue up 8pc to $23.7bn (£18.2bn), but profit from continuing operations flat at $1.7bn. Sales in its aeronautics division rose by almost $1.2bn.