Holidays 4 U has collapsed into administration with some 12,000 holiday makers abroad. The administrators PricewaterhouseCoopers (PwC) said the Civil Aviation Authority (CAA) would be responsible for getting home those already abroad - as long as they had booked flights as part of a package holiday.
It also advised anyone who had not already travelled to not go to the airports.
Customers in the UK can call the CAA call centre on 0844 4933 037.
Customers in resort can call the CAA call centre on +441614445810
It is estimated that Holidays 4U had about 40,000 to 50,000 forward bookings and was licensed to carry 66,000 passengers during the July to September 2011 period,
Brighton-based Holidays 4 UK, which also traded as Aegean Flights, sold packages and flights to Turkey.
Please do not call our number on this blog if you are a holidaymaker affected as we will not have any more information than which appears here. If we have to field calls we will have to delete this post which would be unfortunate.