An Ulster statement said the new deal will provide "a strong platform to invest in the development of players, facilities and fan experience".

"Together, we will continue to invest in elite and grassroots rugby, and we look forward to seeing the Affidea Stadium become a beacon for sport and community pride in Ulster," said the province's chief executive officer Hugh McCaughey.

Ulster's 11-year naming rights deal with construction firm Kingspan concluded at the end of last month, while the association went back to 1999.

The commercial relationship with the Cavan-based company had been questioned in the wake of the firm's links to the Grenfell Tower fire.

Seventy-two people died in the fire in London in 2017 and Kingspan's business practices were criticised during an inquiry.

The company, however, said its products made up only 5% of the insulation at Grenfell and that they were used without its recommendation.