Millward, who has been working one day a week for the ILM as its interim executive director since November, will start the full-time role in mid-July.
The appointment of Millward, who has been on the ILM’s board since September, was announced at the ILM’s annual conference in London today.
It was also announced that Maria King, interim chair of the ILM, had been confirmed in the role.
During his time as interim executive director, Millward, who has been a legacy fundraiser for nine years, oversaw the ILM’s consultation with its members over the proposed merger with the Institute of Fundraising, which has since been shelved.
The merger was put on hold in June after Simon West, the ILM’s former chief executive, and Helen Hoare, its former chair, resigned.
The ILM said at the time that the plans should be halted while decisions were made about how to replace West.
In November the ILM said it had informed the IoF that it would not be pursuing a merger for the time being.
Asked about the outcome of the consultation, which received 165 responses from members and concluded early this year, Millward told Third Sector: "No structural change is proposed at this time. We will review feedback from our members and explore options to deliver a sustainable organisation that better meets their needs. We have no preferred option at this stage; all potential ways forward will be considered on their merits. Our members will have the final say in terms of any changes as per our constitution."
In a presentation to ILM members this morning, he said: "It seems as though, somewhere along the way, we lost sight of our purpose, lost our confidence and stopped fighting for the things we believe in. We have an opportunity to reconnect with our proud history and to breathe new life into our institute."
He said that to deliver sustainable growth for the ILM a review would be conducted of the organisation’s governance, its membership structure, its training and its corporate partnerships.
"The board and I look forward to outlining in due course how we plan to take things forward and how we would like to engage you in that process," he told members.
He also said in a statement: "Having led on the Future ILM consultation, I have a strong sense of our members’ needs and the challenges we face as a sector. I am committed to helping the ILM to address these issues in order to ensure legacy gifts contribute in the greatest possible way to building a better future for the causes, donors and beneficiaries our members represent."
A statement from the ILM said: "Having seen the sector from many different perspectives – regional fundraiser, national marketing manager, head of legacies for Save the Children, chair of Will Aid and most recently as director of the ILM – Chris is uniquely equipped to help steer the ILM at this critical point in our history."
Before Save the Children, Millward spent more than six years in the legacies team at Macmillan Cancer Support.
King, who is head of legacy administration at Cancer Research UK, told Third Sector she felt the ILM was in a strong position to provide members with the organisation they said they wanted.