Quai processes complex, mass migration at speed, completing within seven months (half the industry average time*) whilst ensuring continuity and protection for investors
The Children’s ISA (TCI), the UK’s specialist provider of children’s ISA products, has migrated all 126,000 of its ISA and Junior ISA (JISA) accounts from its previous platform provider onto Quai Digital’s platform. The move is believed to be one of the largest completed ISA migrations to date.
Quai Digital, a provider of white-label digital savings and investment platform services since 2011, completed the migration in just seven months after winning instruction from TCI, which had previously depended on its previous platform partner for platform management services for the last nine years.
All-in-one migration, built for scale
The successful completion of this migration is testament to Quai Digital’s operating platform, which together enable an all-in-one transition process — a clear break from the industry’s more standard phased approach. This showcases their ability to manage high-volume, multi-system transfers with speed, compliance and precision.
This approach allowed Quai Digital to onboard TCI to its platform while simultaneously migrating all the existing investor accounts and carrying out a bulk transfer of cash and asset holdings. Investor protection and service continuity were built in from the start with reconciliation and compliance checks at every stage to ensure accuracy and integrity. Close daily collaboration between Quai Digital and TCI allowed challenges such as bulk contribution uploads, inactive account handling, duplicate direct debits and other data inconsistencies to be resolved quickly and effectively.
The entire migration was handled and completed in record time. A total of seven months from contract signing in January 2025, all 126,000 investor accounts, with cash and asset transfers completed in August 2025. Once engagement began, the migration programme itself took only five months, including the physical migration of investor account data, and bulk transfer of cash and assets, which was completed in just four weeks.
Mark Albinson, Founder of The Children’s ISA, comments:
“We selected Quai Digital after searching for a partner that could deliver quickly and offer both modern technology and a practical, client-first service. Where others struggled to move fast or handle inflexible processes, Quai was always responsive, pragmatic and had a consistent willingness to find workable solutions, always with the protection of the end-investor in mind.
The Quai API-driven platform powered a clever, iterative product development rollout that eased significantly the pressures of migration, and now provides the scalability we need to modernise and expand our operations.”
Tony Webb, CEO at Quai Digital, adds:
“Quai has been supporting clients through regulatory and operational change for nearly 15 years, so we know how important it is to get migrations right. By combining our operational and regulatory expertise with specialist technology, we’re setting a new standard for complex migrations, delivering reliability at scale and giving clients the continuity and service their investors depend on.”
For TCI’s end-clients, including thousands of young people who are supported through the Share Foundation charity, this means their savings are now held on a modern, resilient system designed for long-term security and service.
By year-end, Quai expects to have migrated over 130,000 accounts on behalf of three clients, managing assets worth in excess of £400 million.
Webb concludes:
“Migrations of this scale only succeed when clients have complete confidence that their investors will be protected throughout. Our platform model means we can provide the operational expertise and flexible technology needed to keep TCI’s service running smoothly, giving investors the continuity, confidence and security they expect.”
Quai Digital’s platform provides a rich suite of technical modules, which TCI took advantage of, to launch multiple new features, automated processing and enhanced customer journeys. These new features are underpinned by Quai Digital’s custody, regulatory and service infrastructure, ensuring resilience and continuity for TCI’s clients.
With TCI now live on Quai Digital’s platform, the partnership provides a scalable foundation for long-term growth and the continuity of service investors depend on.
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