Regulatory approval has been granted to Redington for private equity backing from Phoenix Equity Partners.
The move was authorised by the Financial Conduct Authority (FCA) on 4 February, with the deal then completing on 18 February, and Redington said it would now be able to "confidently pursue our long-term strategy".
The investment consultant said the deal with the mid-market private equity house, first announced in December, would not result in any management or wider staff changes. Founders Robert Gardner and Dawid Konotey-Ahulu, will both remain involved with the firm. The value of the deal was not disclosed.
Redington chief executive Mitesh Sheth said: "We're delighted to have received FCA approval and completed on our strategic investment from Phoenix Equity Partners.
"This is a hugely exciting time for Redington, and with Phoenix's support we are able to confidently pursue our long-term strategy by investing further in our research, analytics and technology, as well as in our people and culture - all of which are key to delivering excellent client outcomes."
With Phoenix's backing, the investment consultant is continuing to focus on winning large new institutional customers, while targeting international growth by utilising its technology platform to enhance distribution of advice and research.
Redington has around £500bn of assets under consulting and earlier this year launched a global analytics and scoring system to compare pension provision across both defined benefit and defined contribution schemes.
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