Nucleus Financial Group plc, through its subsidiaries, operates an online wrap platform for the financial services industry. The company's wrap platform offers adviser users custody, trading, payment, reporting, fee-handling, research, and integration services across various tax wrappers and asset choices, including cash, OEICs, unit trusts, offshore funds, structured products and listed securities, ETFs, and investment trusts. It also operates Narrate, a portfolio reporting tool.

The company was founded in 2006 and is headquartered in Edinburgh, the United Kingdom.