Parmenion, which has been added into the FinTech50 list for 2015, said its revamped site was built using "significant feedback" from advisers themselves.
The company's own web development team has worked over 7,000 hours collectively to make these upgrades, it estimated.
The firm said the more modern looking service will streamline key processes with the aim to increase efficiency and reduce error.

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Richard Goodall, partner at Parmenion, said: "The system for producing client portfolio recommendations has become even more intuitive, and a simplified process route is making adoption much easier.
"Alongside the improved user experience, with its combination of modern design and enhanced interface, the new site places key tools at the adviser's fingertips to improve client account management."
He said: "We are delighted with the excellent feedback we have received from advisers. Our users appreciate the high degree of control they have with our systems and the full visibility of all processes, really benefits their client servicing."
"With the capability to develop our own technology we can ensure that the spirit of innovation and flexibility in our services to advisers, continues to thrive. This positive feedback from advisers, together with our inclusion in the FinTech 50, are fantastic endorsements of our software engineering capabilities."
This year's list of 50 top financial technology firms were selected from 780 FinTech companies across Europe.
The firm was selected by a panel including representatives from Google, Microsoft, Fiserv and American Express.