Since our small beginnings over 30 years ago, the HALO family has grown to employ nearly 9,000 staff around the world.

In the countries where we work, we become part of the local community, training and employing men and women from the communities we serve. We create jobs in places where opportunities are often scarce and our local staff make up 98 per cent of our total workforce. Visit our individual country pages to meet some of our local and international staff or view the profiles below for HALO executives.

Our headquarters are in the beautiful Scottish hills of Dumfries and Galloway. We also have offices in Salisbury, UK, and across the Atlantic in Washington DC. 

"HALO is committed to making the world a safe place. We clear mines to stop people from being killed and wounded. We restore land for farming and other livelihoods and we restore confidence in countries devastated by war. I am proud of HALO's men and women, many of whom come from villages and towns living with landmines, who work everyday in pursuit of this goal."

James Cowan, CEO, HALO



CEO and Senior Directors

James Cowan, HALO Trust

James Cowan

Chief Executive

James Cowan was a soldier.  He joined The Black Watch from Oxford in 1986, serving in Berlin, Northern Ireland, Zimbabwe, Lesotho and Hong Kong.  He helped plan the Kosovo operation in 1999.  He commanded in Iraq in 2004, fighting around Basra and latterly Fallujah.  He returned to Iraq in 2006.  He planned the military Olympic security operation of 2012.  As a Major General, he commanded the 3rd Division.  In 2015 he become HALO’s CEO.

Simon Conway

Director of Capability

Simon worked for HALO from 1998 to 2004 in Cambodia, Kosovo, Abkhazia, Eritrea and Sri Lanka. From 2004 to 2008 he was the Director of Landmine Action and a Co-Chair of the Cluster Munition Coalition, which successfully campaigned for an international ban on cluster bombs. He re-joined HALO in 2013, first as trustee and then as a full time employee. He is the author of five novels and winner of the 2010 Ian Fleming award. Masters degree in English Literature.

Camille Wallen, HALO Trust

Camille Wallen

Director of Strategy

Since joining HALO in 2012 in Sri Lanka, Camille has taken on a range of roles, leading on monitoring and evaluation, donor engagement, and policy and advocacy, including HALO’s co-leadership of the Landmine Free 2025 campaign. Over this time, she has worked extensively with our programmes, partners and donors and from our US Office. Now, Director of Strategy, Camille leads on the development of HALO’s organisational strategy and oversees the functions of European donor relations, policy and advocacy, and monitoring, evaluation, accountability and learning.

Tim Porter, HALO Trust

Tim Porter

Director of Programmes

Tim has worked for HALO since 1992. He managed mine clearance operations in Afghanistan 1992-94, twice served as HALO Cambodia Programme Manager (1994-96 and 2006-09), has been South East Asia Desk Officer (1997-00), Southern Africa Desk Officer (2001-05), Central Asia Desk Officer (2009-16), Colombia Regional Director (2016-17) and Middle East Regional Director from 2017. In July 2018 Tim was promoted to be HALO’s Director of Programmes.

Chris Whatley

Executive Director, HALO USA

Chris Whatley joined HALO in June 2019. Prior to HALO, Chris served as Executive Director of the United Nations Association of the United States. Chris previously served as Deputy Executive Director of The Council of State Governments (CSG) and began his career as a field-based officer for the International Republican Institute (IRI), leading programs in Liberia, Nigeria, South Africa, and Zimbabwe.

Helen Pedley

Helen Pedley

Director of Human Resources

Helen joined HALO in January 2018 having previously worked within the NHS and more recently the Further Education sector. She brings with her, extensive strategic management experience having had responsibility for Human Resources, Finance and Facilities. Helen is responsible for leading the Human Resource and supporting approximately 150 staff employed by HALO.

Mick Darby HALO Trust

Mick Darby

Finance Director

Mick joined HALO as Director of Finance in April 2017 and brings a wealth of public, private and not for profit experience to the organisation, including Finance, Project Management, Systems Development, Logistics and ICT. Mick is a keen weekend golfer and enjoys spending time with his young family.

Callum Peebles

Chief of Staff

Callum joined HALO in 2003 and has managed operations on HALO programmes in Angola, Afghanistan, Cambodia, Sri Lanka and Mozambique. Since 2015, he has been responsible for some of HALO’s largest government contracts, and building partnerships with other agencies in the sector. He became Chief of Staff in summer 2018.

Heads of Region

Calvin Ruysen, HALO Trust.

Calvin Ruysen

Head of Region – Afghanistan, Middle East, North Africa

Calvin has worked for HALO since 2007 in Nagorno Karabakh, Cambodia, Sri Lanka, Angola, Somaliland and Afghanistan in both mine clearance and weapons and ammunition management. He was Regional Director for Southern Africa from 2012-16 where he witnessed Mozambique clear its last known minefield. Calvin has represented HALO at the IMAS Review Board. He has an MA from the University of Edinburgh and has attended the University of Cambridge’s Advanced Leadership Programme. He is currently Head of Region for Afghanistan, the Middle East and North Africa.

Tom Dibb

Head of Region - Africa

Tom joined HALO in Mozambique in 1996 and has managed operations and surveys in the field in Afghanistan, the Caucasus, Kosovo and Zimbabwe. Between field postings he has spent 7 years in headquarters serving as Desk Officer for Central Asia (2000 – 2004) and South East Asia (2004 -2007). Tom holds a BA LLB from the University of Cape Town.

Tom Griffiths, HALO Trust

Tom Griffiths

Head of Region - Latin America

Tom trained with HALO in Somaliland in April 2011 and subsequently spent time managing operations in Georgia, Cote d’Ivoire, Mozambique and Afghanistan. Returning to Somaliland as Programme Manager in 2015 he overseen the establishment of HALO’s Southern Somalia Programme. Tom is currently HALO’s Regional Director for Latin America and is IMAS-EOD3 trained. Prior to HALO, he worked in Outdoor Education after attending university in the English Lake District.

Matthew Hovel, HALO Trust.

Matthew Hovell

Head of Region - Asia

Matthew joined HALO in 1998. He has managed mine clearance programmes in Angola, Somaliland, Cambodia, Nagorno Karabakh and Colombia. He has completed two HQ postings as Regional Director where he set up and led our programmes in Georgia, Colombia, Laos and Myanmar. Additionally he has carried out assessments and surveys in Eritrea and Kosovo. Matthew regularly represents HALO at technical review boards and States Parties meetings. He is married to Sirei, an artist, and they have two boys.

Communications and Fundraising

Paul McCann

Head of Communications

Paul has lengthy international experience working in journalism and communications. He was a reporter on The Times in the UK, before running communications for UNRWA, the UN agency for Palestinian refugees. Before HALO, he was communications and advocacy director at the global justice NGO Namati. At HALO he helps to tell our story.

Louise Vaughan

Global Media Manager

Louise Vaughan has worked in the media and for NGOs for 20 years. She started her career at BBC Radio Scotland and then became a features writer at Scotland on Sunday. She reported from Rio de Janeiro for the Independent before becoming an editor on The Sunday Times. In 2008, she went to work for the Control Arms coalition campaign for an Arms Trade Treaty. She has also led media relations for a UK charity working with families affected by child sexual exploitation. She joined HALO in 2015 and has an MSc in Conflict, Security & Development from the University of Leeds.

Diana Tatili

Head of Philanthropy, HALO USA

Diana joined HALO Trust in late 2019 and brings 24 years of experience in philanthropy and programming from several prominent organizations. She started her career with two different UN Agencies in Albania and Kosovo where she worked first-hand in humanitarian relief and is very passionate about mine action post-conflict. At HALO, she oversees plans for U.S. philanthropy and communications, manages foundation and corporate partners and works closely with executive leadership.

Kristen Stevens

Head of Congressional Affairs

Kristen joined HALO Trust in 2017 while finishing her Master’s of Public Administration at American University. Previously, Kristen taught argumentation and public speaking courses in the Communication Studies Department at Western Washington University and coached the school’s competitive debate team. Drawing from a background in politics and the non-profit sector, Kristen now manages HALO’s Congressional advocacy and public policy engagement in the U.S.

Get in Touch

We always love to hear from you. If you have a question or need to get in touch, please use the details on our contacts page.