Nucleus has seen its assets under administration increase by 8.1 per cent to £14.7bn since the start of 2018.
Meanwhile the number of advisers using the platform increased by 5.6 per cent since the start of the year, reaching 1,391.
But inflows onto Nucleus's platform were down in the third quarter of 2018 at £563m, compared with £687m in the same period last year, as the recent market volatility took its toll.
Outflows also increased to £281m during the third quarter of the year, compared with £261m for the same period in 2017.
David Ferguson, Nucleus's chief executive, said: "Nucleus has continued to grow with a solid increase in adviser and customer numbers and strong [assets under administration] growth, despite the well-referenced market uncertainty that is continuing to impact investor sentiment.
"As a result, Q3 flows were below last year’s all-time high, although still well up on 2016.
"Of course, it is in exactly these market circumstances that the need for financial advice is at its most pronounced and we believe the soundness of our business model, our financial health and the ongoing investment we are making in our proposition position us well both now and in the future."
In September Nucleus had predicted increased client inflows due to some rivals' technology woes.
Advisers using Aegon's and Aviva's platforms have faced disruption this year because of technology problems brought about by replatforming, with some advisers having difficulty switching business away from these companies.
Nucleus chief executive David Ferguson said he had seen advisers join his platform due to these issues but predicted most of his company's growth at the expense of these problems had yet to materialise.
He said at the time: "It’s not actually that easy to switch from a platform that has service issues, so I suspect most of the growth from that is still to come."
damian.fantato@ft.com
