The government is urging British nationals to leave Tunisia saying that a further terror attack is "highly likely".
Foreign secretary Philip Hammond said there was no "specific or imminent threat" however the Foreign Office is advising against all non-essential travel to the country.
"While we do not have any information suggesting a specific or imminent threat, since the attack in Sousse the intelligence and threat picture has developed considerably leading us to the view that a further terrorist attack is highly likely," he told the BBC.
Hammond 's warning comes after the murders of 39 holidaymakers in a terror attack at a a beach resort in Tunisia last month.
The Foreign office issued updated travel advice saying:
Since the attack in Sousse, we have been working closely with the Tunisian authorities to investigate the attack and the wider threat from terrorist groups in Tunisia.
Although we have had good co-operation from the Tunisian government, including putting in place additional security measures, the intelligence and threat picture has developed considerably, reinforcing our view that a further terrorist attack is highly likely.
On balance, we do not believe the mitigation measures in place provide adequate protection for British tourists in Tunisia at the present time and we have therefore changed our travel advice accordingly.