Unity Trust Bank plc provides specialist business banking services to trade unions, charities and other organisations that operate in the not-for-profit sector in the United Kingdom and, since 2015, its remit has expanded to include profit-with-purpose businesses.

Originally a licensed deposit taking institution, Unity Trust Limited acquired full status as a bank in 1987.

[1][2] Historically, Unity Trust Bank was majority owned by individual trade unions and federations (73.23%) and The Co-operative Bank owned the remainder (26.7%) through its subsidiary, Co-operative Commercial Limited.

As a result, new shareholders have invested in Unity Trust and the Co-operative Bank no longer has a controlling interest or the right to appoint directors.

[7] In 2013, it became the first British bank to be awarded the Living Wage Employer Accreditation Mark.