In order to connect to financial accounts, Lumio uses a trusted third party data aggregation provider called Moneyhub Financial Technologies Ltd. This is a company based in Bristol, which works with leading financial providers to provide Application Programme Interfaces or "APIs" to facilitate the retrieval of data, such as your balances and transactions. 

We have chosen to work with Moneyhub, because we believe it's the safest and most secure infrastructure with the broadest range of connections in the UK. If you want to know more about them, just visit their site at https://www.moneyhub.com/security and check how they handle security.