From Irish web-site....
A Virgin Atlantic plane from London to Chicago was forced to make an emergency landing today after a suspected fire broke out in the cockpit.
There were 156 passengers onboard the Airbus 8340 when it diverted to Shannon Airport at around 12.30pm.
"There was a suspected fire in the cockpit," said a Shannon Airport spokeswoman.
The plane was en route from Heathrow to O'Hare Airport in Chicago. Paul Charles, Director of Communications for Virgin Atlantic, denied there was a suspected fire in the cockpit.
"The pilot decided to make a precautionary landing at Shannon. We don't know what it is yet, but I have spoken to the captain and it definitely was not a fire," he said.