our senior leadership team

Our Senior Leadership Team is made up of our CEO and three Directors. Together, they are responsible for day-to-day decision making and leading our people across multiple departments including Frontline Services, Helpline, Business Services, Research, Fundraising, Communications, Operations and Finance.

We are governed by our Board of Trustees. For our Memorandum and Articles of Association, please see our filing history with Companies House.

andrew wallis, CEO


Andrew Wallis is the founding CEO. He works with others toward eradicating modern slavery. He chaired the landmark Centre for Social Justice report “It Happens Here”, widely acknowledged as the catalyst for the UK Modern Slavery Act of 2015, advising on its development. He was awarded an OBE that year for his work combatting human trafficking. The job has presented him with challenges as diverse as building flat-pack furniture for Unseen’s first safehouse to advising global businesses on how to address slavery in supply chains. He is “the loveliest disrupter you could hope to meet.”

justine carter, director


Justine led the development of the 2015 Modern Slavery Act, set up the Modern Slavery & Exploitation Helpline in 2016 and has ten years of experience working with, and influencing, statutory and corporate partners. She is regularly called upon to present at national and international conferences and uses her experience of working with Ministers to influence other governments internationally to take action to address modern slavery and, in particular, business supply chain issues.

Sian Hartsill

Sian Hartstill, director


Sian became aware of the issue of modern slavery in the UK during her time as a marketing consultant, working with a client who was very proactive in this area. She knew at that point she wanted to do more. Sian joined Unseen in May 2022 to lead the fundraising, communications, and operations functions. Her career to date has provided a wealth of experience and knowledge in the areas of people development, marketing, communications, fundraising and operations.

Matt Portt

Matt Portt, finance director

Matt Portt, our Finance Director, is the Founder of Portt & Co, an accountancy firm providing outsourced financial services to small businesses across the UK. Matt has been recognised as an expert in his field by Accountancy Age’s 35 under thirty-five, with Portt & Co being shortlisted for several regional and national awards. Matt’s role at Unseen is to balance the long-term security of the charity while ensuring teams have the resources they need to achieve our mission.

find out more

about us

about us

Our mission is simple: to put an end to slavery for good. We do this by supporting survivors of modern slavery and work collaboratively with our partners to put an end to exploitation.

our people

We are proud of the expertise and experience of everyone in our team. We’re working together to end modern slavery and bring about positive and transformational change.

our impact

our impact

Since Unseen began in 2008, we’ve supported over 800 survivors of modern slavery through our safehouse & outreach services and identified over 23,000 potential victims via our helpline.

Justine Currell

As I came to understand more about the issue, including through a visit to an Unseen safehouse, I knew I needed to do more to stop this abuse and exploitation.

For the last five years of my Civil Service career, I was the Modern Slavery Senior Policy Advisor in the Home Office and led on development of the Modern Slavery Act, including the transparency in supply chains provision and business guidance.

I joined Unseen to lead the development of the Modern Slavery & Exploitation Helpline, and Unseen’s work with businesses. I am regularly called upon to present at national and international conferences and use my experience of working with Ministers to influence other governments internationally to take action to address modern slavery and, in particular, business supply chain issues.

In my spare time I enjoy keeping fit, music, reading and travelling.

Andrew Wallis

What ultimately compelled me to act was a report on how people from Eastern Europe were being trafficked through Bristol airport to the USA. Kate Garbers, who went on to be an Unseen Director, and I wrote to all the city councillors, MPs and the Police Chief Constable challenging them on the issue. The challenge came back to us: this city needs safe housing for trafficked women. And so Unseen began.

But we never wanted Unseen to be just about safe housing. We wanted to end slavery once and for all, and that remains our driving focus.

I chaired the working group for the Centre for Social Justice’s landmark report “It Happens Here: Equipping the United Kingdom to Fight Modern Slavery”. This is now acknowledged as the catalyst behind the UK’s Modern Slavery Act of 2015. It was a great honour to be awarded an OBE in the Queen’s Birthday Honours that year. On the other hand, I’ve also been described as “the loveliest disrupter you could ever hope to meet”.

This job has taken me from building flat-pack furniture for safehouses, to working with businesses to address slavery in supply chains, to delivering training, raising awareness and advising governments around the world.

When not at work, I enjoy travelling, spending time with my dog Harley, cooking, supporting Liverpool and Yorkshire CC, music (I’m a former DJ) and endurance events such as the Three Peaks Challenge and Tribe Freedom Runs – which I vow never to do again. Until the next time.