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 is an SROI accredited practitioner, and Visiting Tutor at the Institute for Creative & Cultural Entrepreneurship at Goldsmiths College, University of London

Oliver leads the Social Return on Investment components of Envoy’s work. He has expertise in a variety of primary methods such as focus group facilitation and survey design and analysis, and has trained over 1,000 people in SROI. Oliver has a particular interest in the measurement and valuation of well-being, and in using evaluation to help inform and improve decision making.

Oliver has guided a number of organisations in measuring impact and Social Value, such as the Dame Kelly Holmes Trust, Lloyds Banking Group, Central London Connexions, the Children’s Society, and Genesis Housing Association. Oliver is also Chair of Governors at a nursery school 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, Manufactures and Commerce (RSA). Andy leads the built environment, heritage and public sector commissioning areas of Envoy’s work, and has pioneered Envoy’s unique approach to incorporating Social Value into the assessment of regeneration proposals and public sector procurement.

Andy completed his Executive MBA from the Cranfield University School of Management and holds a Masters in Built Environment from University College London’s Bartlett School, accredited by the Royal Institute of Chartered Surveyors (RICS).  He draws on an international background as a commercial property investment economist and regeneration strategy advisor. He has been involved with land and asset management for social investors in Europe and in sustainable agriculture. This was followed by management roles in business development, evaluation services, and employee engagement services.

More recently, Andy has guided a number of organisations in measuring impact and Social Value, such as Business in the Community, The Afiya Trust, Crown Estate, Hanover Housing (Scotland), Bield housing, Jones Lang LaSalle (Upstream), John Lewis Partnership, Keepmoat, Suffolk MIND, and the Churches Conservation Trust.


Gabriella Monasso, Lead Consultant

Gabriella is a Lead Consultant at Envoy Partnership. She holds a BSc in Sociology from the University of Amsterdam and an interdisciplinary MSc in Inequalities and Social Science from the London School of Economics (LSE). She has expertise in quantitative and qualitative analysis and programme evaluation, including data analysis on large datasets.

Gabriella has helped measure and evaluate the social impact and social value of several organisations across the public, private and voluntary sectors, including Lendlease, Family Action and the Dame Kelly Holmes Trust.

Gabriella 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 more than 20 volunteers. She was part of the National Student Volunteering Network committee, which supports staff working in student volunteering.


Rosie Maguire, Associate

Rosie Maguire is an experienced researcher and project manager. Her work focuses on how evidence and insight can be used to inform the design and evaluation of services and projects, with particular interest in the proportionality of evidence needed to make decisions at different scales of delivery, and stages of delivery process. Her academic training firstly in mathematics and statistics and more recently in social policy and qualitative research gives her a strong theoretical understanding of how to design high quality research. This is combined with over a decade of working with frontline national and local organisations to implement projects within the complexity of people’s everyday lives.


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.