Need to book a flight for 2 adults and 2 childre (aged 3 and 6) flying from Abu Dhabi (can also do Dubai) to L?

as above from Abu Dhabi to London Heathrow on Friday 24 June 2011 returning on July 11 2011. Would obviously like to fly direct which we can use Etihad, British Airways or Emirate airlines from Dubai. Anyone got any discount codes for these airlines. Best price I have is 2,600 pounds with Etihad but obviously want to beat this. Please help!!