Managing director Akin Koc said new regions and properties were being introduced, while its small boat Adriatic cruise fleet was growing.

The expansion comes in the third year of the operator’s programme, which was introduced to widen its range of products.

Koc said: “We are trying to come out from just being Turkey specialists with more destinations and that’s why we’re expanding our programme in Croatia and Slovenia.

“We want to be Croatian specialists – there was a gap in the market and a lot of agents that we worked with recommended that we do it because the boutique style of accommodation we feature in Turkey is similar in Croatia.

“We had a huge sales increase of more than 50% in 2015 and we’re hoping 2016 will carry on with a similar increase.”

New destinations on offer for next year include the historic walled city of Trogir, and the Sibenik and Plitvice Lakes national parks. New tours which can be packaged up as part of a wider break, include the four-night Split adventure tour, which features hiking, canyoning and zip wires and leads in at £669pp, while an eight-day island-hoping tour leads in at £1,169pp, including all tours, transfers and B&B accommodation.

Meanwhile, a further four new properties have been added in Montenegro and one extra property has been added in Slovenia.