Over 20 episodes, host Joe Mahon will discover a whole range of new fascinating stories, remarkable people and stunning vistas across the country, many of them from places that he had never set foot in before.
Joe said: "The team and I are back on the road with renewed energy and undimmed enthusiasm and I can honestly say that this series feels as fresh and newly-minted as the very first series we did, when Vinny Cunningham, our cameraman, was in short trousers.
"After almost 18 years, maybe we're just finally getting the hang of it?"
In the first programme, Joe visits Malin Head in County Donegal, where the stunning scenery offers breath-taking landscapes for visiting tourists and such an easily visible spot has proved crucial for both tactical and communications purposes over the centuries.
Joe discovers historic links with World War II when Allied pilots would use the beaches of Malin Head as map-reference points. This has been a vital spot for shipping communications down through the centuries, as evidenced by the Ballyhillin signalling tower built during the Napoleonic wars.
Joe is on the hunt for signals from transmitters implanted in some of the numerous basking shark populations in these waters by a team of experts anxious to conserve and study these endangered creatures.
The presenter also chats to one of the builders engaged in the heart-stopping task of building a pathway around the cliffs at Malin Head, which has been designed to make it safer for the public to take in the sights and catch a glimpse of the basking sharks.
Michael Wilson, Managing Director, UTV Television said: "Lesser Spotted Ulster is UTV's longest running series, now in its 15th series Joe has demonstrated time and time again that the various places he explores in his own unique way and the people he talks to continue to delight our audience.
"Lesser Spotted Ulster is one of our most watched regional programmes and I am delighted to see Joe and his team return on Friday nights for viewers."
Lesser Spotted Ulster returns to UTV on Friday 11 July at 8pm.