About us

Envoy Partnership is a social value and impact management consultancy. We empower our clients to measure, demonstrate and enhance their social, economic and environmental impact. We guide organisations through all aspects of their social value journey, delivering high-quality independent evaluations, SROI and social value analysis, and impact management support.

Oliver Kempton, Partner

Oliver is a Partner and co-founder of Envoy Partnership. He leads the social value, impact evaluation, and training areas of Envoy’s work. Clients draw on Oliver’s extensive expertise in monitoring and evaluation practice, social value strategy, and techniques such as SROI and Social Impact Evaluation. His key work areas include the measurement and valuation of health and well-being, and using evaluation to help enhance decision making and project design.

Oliver is a Social Value UK-accredited trainer and SROI practitioner. He has trained over 1,000 people in social impact evaluation, and sits on the Social Value UK council and methodology committee. He has supported a wide range of organisations to measure their impact and social value.

Oliver is a visiting tutor in social impact evaluation at the Institute for Creative & Cultural Entrepreneurship at Goldsmiths College, University of London. He is also a governor at a federation of nursery schools in South London.


Andy Gawin Warby, Partner

Andy is a Partner and co-founder of Envoy Partnership, and a Fellow of the Royal Society for Arts (RSA). He holds an Executive MBA (Cranfield University), and a Masters in Built Environment and Sustainable Heritage (UCL’s Bartlett School), accredited by the Royal Institute of Chartered Surveyors (RICS).

Andy has pioneered Envoy’s unique methodology to analysing social value and process effectiveness, to guide a diverse range of organisations in evidencing and managing their Impact. He leads Envoy’s work in health care and social prescribing, regeneration and construction, community investment, operational strategies, and procurement. He has sat on steering groups developing innovative models, including West London Clinical Commissioning Group, the Mayor of London, and the UK Green Building Council.

Andy has worked with numerous volunteering and community projects funded by Big Lottery and the National Lottery Heritage Fund, and he is a trustee of a disability cycling charity. He provides pro bono impact measurement and management guidance to small charities supporting BAME families and women’s rights.


Gabriella Monasso, Lead Consultant

Gabriella is a Lead Consultant at Envoy Partnership. She holds an interdisciplinary MSc in Inequalities and Social Science from the London School of Economics (LSE) and a BSc in Sociology from the University of Amsterdam. She has expertise in quantitative and qualitative analysis , and in managing multi-country research projects.

Gabriella has measured and evaluated the social impact and social value of organisations across the public, private and voluntary sectors. She has particular expertise on impact measurement in the International Development and Humanitarian Aid sectors and has worked on social value and SROI analysis in Uganda, Ukraine, Tanzania, and Malawi. She also has expertise in empowering organisations to manage and improve their impact measurement.

Gabriella has a background in volunteer management and before joining Envoy managed the Volunteer Centre at the London School of Economics. She has extensive volunteering experience, ranging from mentoring disadvantaged children and refugees, to organising live fundraising nights. She also set up a volunteer programme for students and refugees where she recruited and managed over 20 volunteers. She was part of the National Student Volunteering Network committee, which supports staff working in student volunteering.


Rosie Maguire, Senior Associate

Rosie is a senior researcher with over a decade of experience in working with a range of stakeholders including local authorities, NHS organisations, the European Commission and national and local charities. She holds an MSc in Social Policy and Social Research at UCL’s Institute of Education, specialising in the use of qualitative methodologies in policy research, and a BSc in Mathematics with Statistics from the University of Manchester.

Rosie provides additional expertise in family services, early childhood development provision, and and community based wellbeing and psychological support. Her work also focuses on designing, implementing and evaluating innovative social programmes which are based on robust research.

She is a skilled researcher, combining the academic rigour of both qualitative and quantitative approaches with strong design skills to make research appropriate to real life contexts.


Lycia Harper, Associate

Lycia is an organisational development consultant specialising in sustainability and change. She helps people develop ‘system sight’ – greater awareness of the dynamics of the social systems of which they form a part and how to intervene for the greatest impact. In simple terms, she helps people transform their teams and organisations and the impact of their programmes.

Lycia works with not-for-profits, civil society and commercial organisations and brings experience of a wide range of industries and contexts. Projects include organisational change, community investment, cross-sector partnership, and coaching and leadership work to help people explore their potential and how they can catalyse and support positive, sustainable change.

Brenda Roberts, Associate

Brenda is a highly experienced corporate responsibility and communications practitioner and an Associate of Envoy Partnership. For over 25 years she worked at senior level in-house in FTSE 100 companies Whitbread, NatWest Group, and Granada Group, subsequently moving into consultancy and advising clients including Lloyds Banking Group, the Corporate Citizenship, Cadbury and Barclays.

As Head of CSR at Whitbread Brenda played a lead role in developing the Group’s new CSR, communications and reporting strategy, and worked with partners including the Home Office and leading voluntary sector agencies Volunteering England, Sport England and YouthNet, as well as with Sport Relief and CSV Environment and Business in the Community. Brenda became UK regional manager for Net Balance, one of Australia’s leading sustainability consulting firms specialising in sustainability advice, assurance, research and reporting before joining Envoy.

Director of the OB Club, the alumni association of Bedford School, for seven years Brenda has Investor Relations and Membership development roles for London Scottish (R)FC. She was a founding member of the Young Achievers Trust, a young people’s charity involved in delivering a key part of the government’s youth volunteering programme and is current Chair of Tangent locally.