Dominic, 23, picked up the honour of Scoop of the Year after impressing the judging panel with an exclusive interview with John Darwin, the Hartlepool man who famously faked his own death.
Dominic, who joined the Mail as a trainee in September 2010 after studying at Teesside University, won the Trainee Award for Top Scoop at the NCTJ Awards for Excellence in Journalism.
Broadcasting legend Michael Parkinson was the after-dinner speaker at the event, which was held at Nottingham Contemporary.
Dominic said: “I was delighted to hear I had been shortlisted for an award at such a high-profile event, so to be told I had won it was a nice surprise.
“It was a fantastic event, and it was an honour to meet Michael Parkinson as well.
“When I left university I was grateful to get the opportunity to work at the Mail, and I’m thankful to everyone in the newsroom who has helped me learn about being a reporter over the last couple of years.”
Mail editor Joy Yates added: “I’m absolutely thrilled for Dominic.
“He thoroughly deserves such a prestigious award which highlights his constant hard work, determination and talent. Dominic is an outstanding trainee and there is no doubt he has an outstanding career ahead of him.”