New Tui Family Life and adult-only Sensimar resorts are to open next summer.
The family-focused properties will be added in Turkey and Crete while two child-free hotels are planned for Egypt and one in Majorca.
The new additions will bring the number of concept hotels in the Tui UK portfolio up to 174 across 48 destinations.
They “reflect the demand for multi-generational family holidays and adult escapes in these key destinations,” the company said.
The Family Life portfolio is being expanded with properties in Izmir in Turkey and Elounda in Crete.
Egypt will gain Sensimar properties in Hurghada and Marsa Alam.
Another Sensimar resort is due to open in May 2019 in Cala San Vincente, Majorca.
Tui UK commercial director Richard Sofer said: “We are passionately committed to inspiring our customers with the best travel experiences around the world and with these exciting new additions to our Tui-branded hotel collection we’re able to continue offering customers even more choice and flexibility when it comes to adults only and family holidays.
“Our focus remains on the growth of our concept portfolio in diverse mid-haul destinations that holidaymakers want to visit, like Turkey and Greece.”