The provider of international incorporation, trust, fiduciary and fund administration services has made another acquisition.

Vistra Group, a provider of international incorporations, trust, fiduciary and fund administration services, has acquired UK-based business expansion services firm Nortons Group for an undisclosed sum, adding to other recent business takeovers.

Besides the UK, Norton’s other main office is in California and the company was founded in 1993. Nortons offers accounting, tax, human resources and payroll services. A significant part of its work supports US-headquartered technology and life sciences businesses as they set up overseas. The company is also supported by NIS Global, an affiliate network of independent accounting and advisory firms in other countries where Nortons does not have a physical presence.

The business is led by Andrew Norton and Pete Doyle.

The acquisition is expected to complete by the end of February and will take the combined headcount of the Vistra Group, inclusive of the soon to be merged Orangefield Group, to over 2,200 staff in 39 countries.

In January, Vistra announced it had acquired Zürich-based family office and consulting company globalOne, a business that focuses on clients mainly located in Asia. That firm was formed in 1999.

In October last year, Baring Private Equity Asia completed its acquisition of a majority stake – announced in May 2015 - in Vistra Group. This change of investor from the previous majority stakeholder, IK Investment Partners, did not affect the ongoing operations of Vistra Group, whose management team continued to hold a significant shareholding in the company. In 2013, Vistra bought BSI Trust Corporation (Singapore), part of BSI Bank.