The people who lead every engagement.

Every Sustenra engagement is led by a principal with direct experience inside the systems being assessed.

The principal-led model

Senior leadership present throughout the engagement, not just at the start.

Sustenra operates on a principal-led model. Every engagement is scoped and led by one of the 3 principals from start to finish.

The person assessing the situation is the person answerable for the recommendation.

Scoped by a principal

The person leading the work is involved from the first assessment, not introduced after the brief is set.

Accountable throughout

Specialist support may be brought in where needed, but the responsible principal remains accountable for the assessment and recommendation.

Independent by design

Sustenra has no implementation arm and no financial interest in recommending one partner over another.

Our principals

Isabel Litwin-Davies

Isabel Litwin-Davies

Founder and Managing Director

She has held the kind of funding accountability Sustenra’s clients carry. Her work includes governance of large-scale impact funding, including a £132M UK government research programme across United Nations and commercial research environments. Isabel leads governance advisory and delivery oversight engagements.

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Antonia Morzenti

Antonia Morzenti

Director of Advisory

She has managed funded programmes under direct operational pressure across the Gates Foundation, UNICEF, and Johns Hopkins University. Her assessments are grounded in having held the accountability she now assesses. Antonia leads partner capability review and programme strengthening work.

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Agnes Nanyonjo

Agnes Nanyonjo

Director of Programme Delivery

Physician and researcher with a PhD from Karolinska Institutet, Agnes works at the intersection of research evidence and institutional governance. She assesses whether funded programmes are well designed, deliverable, and able to perform in complex environments.

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Speak directly with a principal from the first conversation.

Every initial conversation is with a principal who can assess your situation and tell you whether Sustenra is the right fit.