Wagestream Limited operates the Wagestream app; Wagestream is an EMD Agent (FCA reference number 902046) of Modulr FS Limited, a company registered in England and Wales with company number 09897919, which is authorised and regulated by the Financial Conduct Authority as an Electronic Money Institution (Firm Reference Number: 900573) for the issuance of electronic money and payment services.
Your Build pot is an e-money account provisioned by Modulr Ltd. Whilst Electronic Money products are not covered by the Financial Services Compensation Scheme (FSCS), your funds will be held in one or more segregated accounts and safeguarded in line with the Electronic Money Regulations 2011
More detailed information on how the funds you set aside through your pot are safeguarded are available here for UK residents and here for non-UK residents.