Abta and the CAA confirmed the failure of the Surrey-based Atol holder on Monday (11 October).
The firm traded as Mercator Travel and Revealed Travel under Abta Y488X and Atol 10528.
It specialised in tailor-made holidays and escorted small-group tours to Mexico, central and southern America, Antarctica and the Falklands, and south-east Asia.
Sub-brands included Antarctica Revealed, Belize Revealed, Bolivia Revealed, Brazil Revealed and Cambodia Revealed.
"Mercator Enterprises Ltd ATOL 10528 has ceased trading as an ATOL holder on 11/10/2021," said the CAA. "The company based in Surrey traded under the names Mercator Travel and Revealed Travel."
