The UK Foreign Office has set up a dedicated phone line for those worried about friends or relatives in Paris .
Anyone concerned about British people who may be caught up in the attacks in the French capital can call the switchboard number.
The number to call from within the UK is 0207 008 1500.
If you are overseas and concerned about a friend or relative then you should call 0044 207 1500.
For those in Paris the hashtag #porteouverte is being used as a way for people to offer shelter and help.
France has declared a national state of emergency and closed its borders.
Up to 60 people are believed to have died in a number of attacks during Friday evening in Paris.
