GOV×BRM · Biweekly newsletter
GOV×BRM: Government Business Relationship Management
Insights on relationships, strategy and outcomes in government technology, read by over 700 practitioners across the UK civil service and internationally.
AI & Digital Transformation · UK Government
I lead digital transformation where it is most difficult: at the heart of government. As a Business Relationship Manager at HM Treasury, I turn policy ambition into operational reality and help the public sector adopt AI responsibly rather than fashionably.
About
I work as a Business Relationship Manager at HM Treasury, partnering with the Government Actuary's Department, the Office for Budget Responsibility and the National Infrastructure and Service Transformation Authority. The job, done properly, is translation: sitting between the people who need things and the people who build them, and making sure change is driven by the business rather than done to it.
Departments rarely struggle because the technology is bad. They struggle because nobody owns the relationship between ambition and delivery. That relationship is what I manage, from everyday service demand through to how the Treasury Group approaches AI adoption, including directing the Treasury Innovation Day and the Digital Excellence Series.
The route here was not typical. I grew up in care in County Durham, and joined the Treasury's new Darlington Economic Campus through the Civil Service Care Leaver Internship Scheme two days after graduating. Within three years I was ranked 6th in the public sector in the AI100 UK, named in Apolitical's Government AI 100, and recognised as a Global Top BRM by the BRM Institute.
That background is not a footnote to the technology work. Growing up inside systems designed around you, rather than with you, teaches you exactly what to look for when governments start automating decisions. It is why I chair the Cross-Government Care Leavers Network, why I publish research on social mobility policy, and why accessibility runs through everything I do professionally.
I write GOV×BRM, a biweekly newsletter on business relationship management in government read by over 700 practitioners in the UK and internationally, and I am a Professional Member of BCS, The Chartered Institute for IT.
Experience
Business Relationship Manager (Digital Business Partner)
HM Treasury · 2024 to present
Lead BRM for GAD, the OBR and NISTA. Directed the Treasury Innovation Day and Digital Excellence Series, led the HM Treasury Innovation Awards, and presented over 60 technology change proposals to investment committees. Departmental accessibility champion.
Assistant Private Secretary to the Group Chief Digital & Information Officer
Department for Science, Innovation and Technology · 2023 to 2024
Managed the Group CDIO's strategic agenda across ministerial and Director General networks. Orchestrated the SCS Digital Excellence Programme for 500+ senior leaders and digital upskilling initiatives reaching over 2,000 staff.
Executive Assistant to Deputy Directors
Department for Culture, Media and Sport · 2023
Presented lived experience evidence to the cross-government ministerial board on care leavers and authored the policy case for including care leavers in Equality Impact Assessments.
Correspondence & Innovation Officer
HM Treasury · 2022 to 2023
Won the HM Treasury Professional Award for Innovation for implementing robotic process automation across ministerial correspondence workflows. The start of a career built on releasing human capacity for higher-value work.
Recognition
Research
SSRN · Policy briefing · June 2026
A systematic audit of 107 apprenticeship providers, finding that 64% made no reference to care leaver or EHC-related funding support at the point where prospective apprentices seek eligibility information. Sets out five policy recommendations, with the full compliance dataset published openly.
Credentials
What leaders say
I've always believed that successful digital transformation is less about technology and more about culture and Sebastian instinctively understands this. He is a rare example of a true connector in government. Sebastian is fast becoming an influential voice in the future of GovTech.
Mike Potter
Former UK Government Chief Digital Officer
Sebastian embodies the spirit of Alexander Hamilton: he is non-stop. He connects people, discerns the strategic picture with precision, and ensures that success follows in his wake. He doesn't throw away his shot!
Paul Farrow, CITP MBCS
Head of Digital Services, HM Treasury
Sebastian stands out as an exceptional partner of ours within Whitehall. We were blown away by HMT's Innovation Day, where Sebastian was part of a small team charged with organising and managing a large-scale gathering of innovators in an event of national significance.
James Smith
Founder, Government Transformation Magazine
Sebastian is a motivated and effective leader. He has expert coordination skills that enable him to make a tangible impact within organisations. He is able to effectively work with a broad network of people and achieve outcomes that deliver value.
Jonny Williams
Chief Digital Adviser, UK Public Sector, Red Hat
An exceptionally driven professional with a profound understanding of business transformation and AI. What sets Sebastian apart is his ability to navigate a complex partner organisation landscape, where he expertly matures relationships and secures long-term customer success.
Tamas Laszlo Gaal
Asset & CMDB Manager, NS&I
Sebastian is a visionary technologist, deeply committed to public service. He is not only an exceptional professional but also a compassionate advocate for those who often go unheard.
Darren Evans
CEO & Founder, After Cloud
Sebastian's enthusiasm and collaborative spirit were always evident. What stood out most was his genuine interest in innovation and his ability to foster strong working relationships. Sebastian would be an asset to any team.
Dominic Evans
Copilot Lead, Department for Science, Innovation and Technology
Sebastian mixed kindness, clarity and firmness in his dealings with me and colleagues, and is both warm and astute in equal measure. A rare combination.
Marie-Elise Howells
Policy Professional, Department for Culture, Media and Sport
Selected writing
GOV×BRM · Biweekly newsletter
Insights on relationships, strategy and outcomes in government technology, read by over 700 practitioners across the UK civil service and internationally.
Apolitical · November 2025
What happened when the Treasury opened its doors to cross-government and industry innovation.
BRM Institute · August 2025
On why business relationship management is the connective tissue of government digital delivery.
ICS Digital Blog, GOV.UK · September 2024
On the cross-departmental upskilling sessions that brought generative AI, automation and digital inclusion to thousands of civil servants.
TechUP · July 2026
On moving from the care system to AI governance work, and why rigorous understanding matters more than credentials.
Contact
If you work in government digital, BRM or AI transformation, I would like to hear from you.