Local Government Reorganisation (LGR) | Microsoft Licensing & Tenant Consolidation Experts

Local Government Reorganisation

Trusted IT & Licensing Expertise for Councils

Local Government Reorganisation (LGR) is one of the most complex and sensitive transformation programmes a council can face. As districts and counties transition into new unitary authorities, technology leaders are under pressure to maintain services, protect data, manage cost and make decisions that will stand up to scrutiny, often before the final structure is confirmed.

We support councils across the UK through Local Government Reorganisation, acting as a trusted, low‑risk partner throughout periods of uncertainty. Our strength lies in combining deep local government understanding, licensing expertise, and decades of experience delivering large‑scale public sector IT change, with a strong heritage in Microsoft technologies.

Our focus is not simply technology. It is helping councils make confident, defensible decisions that protect today’s services and tomorrow’s organisation.

Estate and Licensing Assessment

We work with each affected authority to establish a clear, evidence‑based view of the current IT and licensing landscape. This creates a single, trusted baseline for leaders across all organisations involved. This includes:

Existing platforms, tenants and environments
Licensing models, utilisation and renewal timelines
Security, compliance and operational considerations

Future-state and Consolidation Planning

Our advice is independent, practical and grounded in local government realities. Using real data and public sector experience, we help councils:

Understand consolidation and coexistence options
Identify duplication, inefficiency and avoidable cost
Align short‑term decisions with the future unitary authority
Avoid commitments that limit long‑term flexibility

Transition and Coexistence Support

We recognise that not everything can, or should, move at once during Local Government Regrouping. Where change is required, we support councils with:

Phased, low‑risk transition planning
Coexistence strategies where timelines are uncertain
Governance‑led approaches to migration and consolidation

Microsoft Licensing & Microsoft 365 Tenant Consolidation Experts

Local Government Reorganisation (LGR) places significant pressure on IT, security and procurement teams. Merging councils, shared‑service models and new unitary authorities often inherit multiple Microsoft 365 tenants, inconsistent licensing models and fragmented security controls.

Trustmarque helps local authorities and public sector organisations navigate LGR with confidence, delivering secure Microsoft 365 tenant consolidation, licensing alignment and migration services that minimise disruption and support organisational change from day one.

Supporting Local Authorities Through Reorganisation and Consolidation

As councils restructure, technology must adapt quickly while remaining secure, compliant and cost‑effective. Microsoft 365 plays a central role in collaboration, identity and service delivery, but unmanaged tenant sprawl can increase risk and cost. Trustmarque supports local government organisations to:

Consolidate multiple Microsoft 365 tenants into a single, secure environment
Maintain a unified email, identity and collaboration experience
Align Microsoft licensing across merged or restructured estates
Establish consistent governance, security baselines and compliance controls
Protect frontline and back‑office users during periods of organisational change

Microsoft 365 Tenant‑to‑Tenant Migration for Local Government

Tenant consolidation is one of the most complex technical challenges during LGR. Trustmarque delivers structured, phased Microsoft 365 tenant‑to‑tenant migrations, reducing operational risk and ensuring continuity of service. We work closely with internal IT teams to provide governance, clarity and confidence throughout the process. Our Microsoft 365 migration services include:

Discovery and assessment of source and destination tenants
Exchange Online, OneDrive, SharePoint and Microsoft Teams migration
Identity and access alignment for a seamless user experience
Secure cutover planning to minimise service disruption
Ongoing optimisation and post‑migration support

Microsoft Licensing Alignment for LGR

Alongside technical consolidation, Trustmarque provides specialist Microsoft licensing expertise for local government organisations navigating reorganisation. This ensures licensing supports long‑term value, not just short‑term transition. We help councils:

Rationalise licensing inherited from multiple authorities
Identify duplication, under‑utilisation and cost‑saving opportunities
Maintain compliance with public sector procurement and audit requirements
Align licensing to future operating models and workforce changes

Webinar Series

Digital Readiness for Local Government Reorganisation

Local Government Reorganisation puts severe pressure on digital services, security, and identity, often at pace and under scrutiny.

This free webinar series is designed to help councils prepare, stabilise, and move forward with confidence.

👉 Single registration covers the full series.

When you sign up, you are automatically registered for all webinars and will receive calendar invites and reminders for each session.

Webinar dates & sessions

Webinar 1 – June 2nd

Local Government Reorganisation: Getting Digital Ready for Day One
Focuses on early readiness, avoiding irreversible decisions, and keeping resident services live from day one.

Webinar 2 – July 7th

Identity, Access & Security: The Non‑Negotiables of LGR
Covers secure access design, reducing cyber risk, and avoiding common identity pitfalls during reorganisation.

Webinar 3 – August 11th

Convergence Without Chaos: Bringing Councils Together Safely
Explores collaboration strategy, data and migration planning, and how to converge without destabilising services.

Duration: 45 minutes per webinar
Time: 10am

Consultation with each council involved in reorganisation

Estate and licensing discovery

Risk and opportunity identification

Clear options and recommendations aligned to LGR timelines

Case Example

Microsoft 365 Tenancy Migration for the Public Sector Organisation

Trustmarque has delivered complex Microsoft 365 tenant consolidation programmes for UK public sector organisations operating in highly regulated, local government‑equivalent environments.

Case Study Snapshot

Engagement: Microsoft 365 tenant‑to‑tenant migration and consolidation
Organisation size: ~3,500 users
Sector: UK public sector (local government–equivalent)
Services delivered:

Discovery & design
Security baselining
Microsoft 365 migration
Licensing alignment

The Challenge

The Trustmarque Approach

The Challenge

The organisation was undergoing structural change, requiring the consolidation of multiple Microsoft 365 tenants into a single, secure environment. Key challenges included:

- Migrating email, OneDrive and collaboration data with minimal disruption
- Establishing a single identity and email experience from day one
- Aligning Microsoft licensing and security baselines across legacy environments
- Ensuring compliance, audit readiness and data protection
- Maintaining business continuity for frontline and back‑office users

The internal IT team had limited experience of large‑scale tenant‑to‑tenant migrations and required a trusted partner to reduce risk and manage complexity.

Solutions

Microsoft

Security, Governance and Compliance

M365 data Backups

Trustmarque delivered a phased, risk‑managed migration programme, drawing on experience from public sector, M&A and enterprise consolidation projects.

Discovery & Design

- Assessment of source and target Microsoft 365 tenants, including Exchange Online, OneDrive, SharePoint, Microsoft Teams and identity
- Definition of a future‑state tenant aligned to Microsoft security best practice
- Agreement of a phased migration approach rather than a high‑risk “big bang”

Tenant Foundation & Security

- Configuration of the destination tenant with standardised governance and security controls
- Alignment of identity and access policies to support a unified user experience
- Preparation of the environment to support scale and future organisational change

Migration & Rollout

- Migration of email, OneDrive, SharePoint and Teams collaboration data
- Creation of new user accounts and mailboxes in the destination tenant
- Controlled cutover supported by clear communications to minimise user impact