OneFamily is a financial services provider with offices in Brighton and Hove, Sussex, Peterborough, Leeds and Swindon.

In 2022, OneFamily announced its acquisition of life insurer brand Beagle Street.

[2] In 2014, after gaining the backing of 95% of its members, Engage Mutual Assurance merged with Brighton-based Family Investments to create OneFamily, which began trading under its new name from April 1, 2015.

[6][7] OneFamily has 2.6 million customers across the UK[8] and is responsible for £8 billion of assets under management.

It also supports existing Child Trust Fund accounts that were created prior to their discontinuation by the British government in 2011, and replaced with Junior ISAs.