The Team

Katharine Hibbert, Founder and Director

Katharine leads on strategy and takes overall responsibility for the way the organisation is run. She came up with the idea of a socially responsible property guardian organisation while researching Britain’s wasted housing for her first book, FREE: Adventures on the Margins of a Wasteful Society (published by Ebury Press in January 2010). She regularly comments on empty houses and related issues in the national media. She has worked as a journalist, writing for a wide range of publications including the Sunday Times and the Guardian.  She now writes for The Pavement, a magazine for homeless people, on a voluntary basis, and is a trustee of Headway East London, a charity which supports survivors of brain injury.

Peter Brown, Chief Executive

Peter has leadership responsibility for Dot Dot Dot’s mission, impact and business growth plans. He is particularly interested in widening the number of property owners that we work with and helping to widen the impact of the volunteering carried out by our property guardians.

Peter has a background in regeneration, social housing and managing innovation to deliver better public services. After working in estate regeneration programmes and on large housing renewal schemes he has worked for a number of housing associations. Prior to working at Dot Dot Dot, he spent five years with Tower Hamlets Homes working across the business delivering service innovations including new tools to help housing staff better support vulnerable residents.

Peter is vice-Chair of the regeneration charity South Kilburn Trust, a member of the Chartered Institute of Housing’s London Board and a volunteer for Crisis’ Christmas homeless programmes, one of the largest volunteer-led programmes in the UK.
Peter is an alumni of Goldman Sachs’ 10000 Small Business Programme.

Mark Ackroyd, Head of Services

Mark is responsible for ensuring the delivery of our core services such as property management and supporting our guardians.

Mark has provided leadership and operational management in several sectors including startups, schools and sport, with a focus on helping organisations though periods of growth or change. Most recently he was Director of Facilities at the social business and workplace provider Second Home, and before that was Business Manager for a primary school in South London. Away from work Mark is a cyclist and climber and enjoys being outside as much as possible, including when he volunteers for the London Youth Games.

Abi Carter, Head of Growth and Partnerships

Abi is responsible for growing Dot Dot Dot’s property portfolio, and bringing more guardians on board to live in the spaces and support good causes. Developing long-lasting partnerships with clients who share Dot Dot Dot’s values, and promoting the benefits of volunteering to both individuals and communities is key to her role.

She came to Dot Dot Dot after working for 12 years in sport – as Head of Strategy and then Director of the charitable foundation at Marylebone Cricket Club, at Lord’s. She chairs Paddington Development Trust, which provides employment, training and cultural programmes to some of London’s most disadvantaged communities, and also volunteers at Tottenham Food Bank and in her local mutual aid group.

Away from work she loves Liverpool FC, travelling to new countries, and taking part in triathlons.

Derrie La Cumbre, Services Team Leader

Derrie has a long charity sector background with experience managing projects and services in homelessness and mental health charities. Her role as Services Lead is to lead and support the Services Team who liaise directly with both property owners and guardians, to ensure that everyone gets a great service.

Derrie has a BA (HONS) in Informal and Community Education and has worked with young people both in the U.K. and USA. In her spare time Derrie loves to travel and experience different cultures and communities.

Louise Maddy, Relationship Manager

Louise works in the services team and manages the performance of a portfolio of projects and contracts against our social impact, quality of service, financial, and contract standards. Louise has a background in Operations in the Hospitality industry. She has run food social enterprise projects in both the charity and private sector. She also ran her own food business specialising in avocados.

Louise graduated from the University of Liverpool with a BA hons in Business Studies. In her spare time she enjoys volunteering in her local community and travelling to see different places and cultures.


Omar Al-Amin, Business Development Manager

Omar is responsible for communicating to property owners and landlords how we manage and secure empty buildings through placing guardians to live in them, and how we ultimately create positive impact in local communities. Omar has a BA in Politics and MA in Diplomacy, both achieved at the University of Nottingham. Before Dot Dot Dot, he established the secular community Sunday Assembly in Manchester, working closely with housing association partners, building a sense of community and encouraging thoughtful wonder about the world and life in general.

Patrick Harrison, Business Development Associate

Patrick works on the Business Development team, keeping in touch with existing clients and helping to increase our reach with potential property-owning clients. His background includes managing community projects with a housing association, charity fundraising, and local authority regeneration and planning. Patrick is keen on the natural world, and in his spare time volunteers with the Scouts and his wife’s forest school activities.

Alice James, Marketing Coordinator

Alice moved to London to study Sociology at Goldsmiths, University of London, focusing on contemporary and practical issues. After graduating, Alice joined our team and has been able to draw upon the useful knowledge base she acquired whilst studying during her time working in the housing and guardianship sector. In her spare time, she enjoys reading and going on long walks with her dog.

Liz Clarke, Relationship Coordinator

Before joining the team, Liz had worked for a homelessness social enterprise in London. She is motivated by the prospect of filling empty spaces in London and making a difference to local communities where the guardians are based. Liz has a degree in History from Edinburgh University and in her spare time likes to discover new music and go to gigs.

Mark Muldoon, Relationship Coordinator

Mark looks after Dot Dot Dot properties and all the guardians that live in them. He started work at Dot Dot Dot in 2017. He’s also himself been a property guardian in London continuously since 2012 and loves how many remarkable buildings he’s got to live in over the years!

He’s also a culture journalist and is a judge of Glastonbury Festival’s Emerging Talent Competition, as well as a talent scout for the Edinburgh Comedy Awards. He takes a particular interest in holidaying in the Middle East, most recently spending three weeks travelling Iran in 2019. For his Dot Dot Dot volunteering he is an Event Photographer at a local Housing Association, a litter picker along local canals and a Painter & Decorator at a nearby community centre

 Jess Johnson, Relationship Coordinator

Jess has a background in operational and logistical roles in the museum and cultural sector. Jess’ role at Dot Dot Dot focuses on looking after our properties and the guardians that are housed in them. She has volunteered with FareShare, a chairty which aims to tackle food waste whilst also working with communities to ease food poverty. In her spare time, she likes going on adventures in her campervan and exploring new places.

Cosmina Toma, Finance Coordinator

Cosmina moved to London from her home country, Romania, after completing her Masters degree in Economics. She also volunteered as the Vice president of the PR and Marketing department for her student association at The Bucharest University of Economic Studies. In her spare time, Cosmina enjoys painting and self studying to achieve further accounting qualifications in the UK.

Amy Fuller, Marketing Assistant

Since graduating from the University of Sheffield with a degree in English Literature, Amy has concentrated on projects and roles with communities at their centre. In the year following her degree she volunteered at Foodhall, a pay-as-you feel café built on social eating to combat food waste, and spent the last year working in a library. She is particularly interested in the ways we can use creative and community-led thinking to combat waste, and it is this that drew her to Dot Dot Dot.

Katie Agar, Guardian Experience Manager

Katie joined Dot Dot Dot through On Purpose, a programme designed to support career transitions into the social impact space. Katie’s work focuses on ensuring a great experience for our guardians, both when they are looking for properties with us and once they are a fully fledged Dot Dot Dot guardian.

Prior to On Purpose, Katie worked on events and campaigns to promote mental and physical wellbeing in the workplace and ran a mobile bar business stocking and supporting social enterprise and fair trade drinks brands.

Katie loves nature and exploring new places. She is passionate about mental health and supporting the many people who are finding life more challenging than ever during the pandemic.