We are going to bring this live page to a close now.
To wrap up what we know so far:
- At least 15 Britons have been confirmed dead by the Foreign Office, which warned the toll could rise.
- Three of the Britons who died in the attack have been named as Carly Lovett, Adrian Evans and Joel Richards.
- Foreign Minister Tobias Ellwood has said it was "the most significant terrorist attack on the British people" since 7 July, 2005.
- Tour companies and airlines have been flying tourists out of Tunisia and home to the UK.