The Tunisian police have come in for criticism following an inquest into a terror attack with left 30 Britons dead in June 2015.
The response from local authorities was branded “shambolic” by a coroner in London earlier.
Judge Nicholas Loraine-Smith ruled the Britons were “unlawfully killed” when a gunman opened fire at a hotel in the beach resort of Sousse.
A total of 38 lives were lost during the attack.
The Islamist gunman, Seifeddine Rezgui, was shot dead by police after an hour-long killing spree.
However, the coroner rejected claims of negligence against TUI and the owners of the Tunisian hotel.
Loraine-Smith argued tour operators are not open to charges or neglect when travellers voluntarily agree to go on holiday abroad.
Instead the law only applied in cases where an organisation had a duty of care towards someone because of their youth, age, an illness or incarceration, he added.
It is now expected families of 22 of the Britons killed plan to take TUI to a civil court in a bid to get compensation for personal injury and deaths.
In a statement TUI said it was “wholly erroneous” to claim it had been neglectful and there was insufficient evidence of any gross failure.
An ABTA spokesperson added: “The Sousse terrorist attack was an appalling attack on innocent holidaymakers involving a terrible loss of life.
“It is entirely appropriate that there has been a thorough investigation into what happened on the day and in the run up to the incident.
“The coroner has concluded that all victims were unlawfully killed by the actions of a lone gunman.
“The safety and security of holidaymakers is of critical importance to the travel industry and we will carefully review the coroner’s report when it is published at the end of March to see if there are any learnings for the industry.”