Tour operator Travellers Cities, run by the brother of All Leisure Group executive chairman Roger Allard, ceased trading on Monday October 15.
The company, which sold direct and through the trade, ran a range of short breaks and long-haul holidays, and was based in Westerham, Kent.
Travellers Cities was established in 1991, had three members of staff and was not an Abta member.
Customers with forward bookings are advised to contact the CAA.