Both businesses are part of the Royal Bank of Scotland Group, offering a range of mortgages to brokers.
Robert Sinclair, director of AMI, said: “We are delighted that the two RBS Group intermediary mortgage businesses have demonstrated their support for the sector by joining AMI. This is a very positive move and we look forward to forging strong relationships in the coming months.
“NatWest Intermediary Solutions and Ulster Bank are demonstrating their ongoing commitment to the mortgage intermediary profession by joining the trade body for brokers. There has never been a more pivotal moment to be pledging support to our members.
“We look forward to working closely with NatWest Intermediary Solutions, in the future and thank them for the support they have already shown.”
Graham Felstead, head of intermediary channel at NatWest Intermediary Solutions, added: “The decision to join AMI reflects the long-standing commitment we have made to the intermediary market.
“We have always enjoyed a healthy dialogue with AMI and through the insight we gain daily from our extensive field and phone-based business development management network, we feel we are able to contribute fully to the further development of the mortgage intermediary sector. I am looking forward to the opportunities our membership offers us to fully support the cause of the broker market.”
Mairead Coulter, head of intermediary mortgages at Ulster Bank, said: “We are delighted to become a member of AMI. This decision reflects our ambition and commitment to lending and supporting mortgage brokers in Northern Ireland.”