The Children’s Isa (TCI) has completed the transfer of 126,000 Isa and Junior Isa accounts from Embark onto Quai Digital’s platform, underpinned by WealthOS technology.
The move, believed to be one of the largest migrations out of Embark to date, was delivered in just seven months.
Quai Digital, which has provided white-label digital savings and investment services since 2011, won the mandate in January 2025 and completed the bulk migration of cash and assets in just four weeks over the summer.
TCI had relied on Embark for platform management for the past nine years. The migration included the simultaneous onboarding of TCI onto Quai’s system and the transfer of all client accounts, assets and cash holdings.
Investor protection and service continuity were built into the programme, with reconciliation and compliance checks at every stage.
Mark Albinson, founder of TCI, said: “We selected Quai Digital after searching for a partner that could deliver quickly and offer both modern technology and a practical, client-first service. The Quai API-driven platform, powered by WealthOS, provided the scalability we need to modernise and expand our operations.”
Tony Webb, CEO at Quai Digital, added: “By combining our operational and regulatory expertise with WealthOS’s specialist technology, we’re setting a new standard for complex migrations, delivering reliability at scale and ensuring continuity of service.”
Anton Padmasiri, co-founder and CEO of WealthOS, said the project showed what could be achieved when firms adopt modern, purpose-built infrastructure.
“To have successfully migrated 126,000 accounts within just seven months demonstrates the outcomes that are possible when innovation and collaboration come together,” he said.
For TCI’s clients, including thousands of young people supported through the Share Foundation charity, the move means their savings are now hosted on a modern, resilient platform designed for long-term security and scalability.
This marks Quai Digital’s second migration using WealthOS. By the end of 2025, it expects to have migrated more than 130,000 accounts for three clients, representing assets of over £400m.
