She joined presenter Joe Mahon this week as they filmed segments for the programme, which is celebrating Derry~Londonderry's year as the first UK City of Culture.
Together, they will highlight the wide-ranging programme of artistic activities taking place in the city and Joe will put them in the context of the history, culture and natural environment of Derry and the surrounding area.
Michael Wilson, UTV's Managing Director of Television, said he was delighted to welcome the new presenter on board.
"Sarah is one of the best broadcasters in Northern Ireland and since she left the BBC, I have spoken to her about future projects," Mr Wilson said.
Sarah will take a role in UTV's City of Culture coverage and I hope she will be involved in other programming yet to be finalised.
The former BBC presenter left the organisation last month after more than 17 years.
In a statement issued in January the mother-of-two, who is from Portstewart, said that although she was leaving to spend more time with her family, her departure didn't mark the end of her broadcasting career.
"After more than 17 years with the BBC I felt the time was right to try something different and also to spend more time with my family," she explained.
"I'm really looking forward to an exciting future ahead."
UTV commissioned local company Westway Films to produce 12 monthly hour-long Lesser Spotted Culture programmes this year.
The first episode of the series was aired last month, with Joe conducting a tour of a part of the Walled City that means a lot to him personally.
"We are delighted to be involved in the City of Culture celebrations and to underline our commitment to the area," Mr Wilson said in January.
The second episode presented by Joe and Sarah will be shown on UTV at the end of the month.