FCO confirm that a UK aircraft is on its way to Juba to evacuate British nationals who wish to leave.
A Foreign and Commonwealth Office spokesperson said:
A UK aircraft is en route to Juba to evacuate British nationals who wish to leave from Juba airport on Thursday 19 December. If you are a British national and you wish to leave Juba you should contact the FCO as soon as possible on +44 207 008 1500 or by email at firstname.lastname@example.org
Any British nationals wishing to leave should be reassured that all personal information will be protected in line with the Data Protection Act 1998.
Read the FCO travel advice for South Sudan
Follow @FCOtravel advice on Twitter
Follow the Foreign Office on Twitter @foreignoffice