Men are less likely to talk than women with 54% of women having had a conversation compared to 37% of men.
Westfield in Shepherd's Bush had to be evacuated after an unexploded Second World War bomb was found nearby.
Shoppers were told they had to leave the shopping mall after the bomb was found at a building site.
One witness tweeted that it was "mayhem" after "thousands of people" were told to get out.
White City and Wood Lane Tube stations were shut, causing serious disruption, Transport for London said.
Other buildings in the area were emptied and BBC workers at Television Centre were also affected.
"Centre House and Television Centre are within the police cordon and we are awaiting further advice from police as to whether those buildings may need to be evacuated," an internal email stated.
Police set up an exclusion zone after the wartime shell was unearthed at a building site in Ariel Way at around 10.40am.
A Metropolitan Police spokesman said: "A cordon and a wider exclusion zone of 400 metres have been implemented as a precaution, whilst we deal with the incident.
"We await the arrival of specialist officers who will assess ordnance.
"A number of premises close to the building site have been evacuated as a precaution and we continue to assess whether there is need to extend the current cordon which is in place."
The device is around 14in (35cm) long and 6in (15cm) wide, according to police.
"Local road closures and diversions are in place and pedestrians and motorists are advised to avoid the area," the Met spokesman added.
"There are serious disruptions to public transport; commuters are advised to check before they travel."
A career in the media and entertainment industry starts here...
A man has been fined £1,800 for flying drones over Parliament, near Buckingham Palace and over football stadiums.
Government to investigate after some restaurants accused of withholding tips
Most Viewed Pictures On Heart
Recently Played Tracks
Now playing: The best feel good music
Deposit £10 to get a £40 Welcome Bonus - That's £50 to play bingo, slots and more!*
Over 50 tracks to make you feel-good. New album out now...
Find your local four day weather report here.
What's happening on the roads where you are?
Make Heart the soundtrack to your day and you could be a winner with great prizes up for grabs throughout the day.
Get some great ideas on how to advertise your business on radio, online and on mobile.