Fidelity International plans to close its Kent office in 2020 with and transfer operations to its Surrey office.
The business said that all 650 staff currently based in Kent would be offered the opportunity to relocate.
Fidelity currently has three main office locations in the UK - Tonbridge in Kent, Kingswood in Surrey and Cannon Street in the City of London. In addition, Fidelity’s retirement service is based on the Isle of Wight.
Peter Horrell, managing director, UK at Fidelity International, said: ‘We have to work in different ways to deliver for our clients and that includes being more efficient, more collaborative and working with more flexibility.
'We believe it is much easier to achieve this with one suburban site rather than have our infrastructure and our staff spread across two.
‘Closing an office is never an easy decision to make but it is our clear intention and also our strong desire that the majority of people who work in our Kent office will come with us to Kingswood in Surrey and continue with their roles in a different location.
‘We believe that our Kingswood location gives us the best opportunity for this more flexible and collaborative way of working and we will be developing a new and modern work space to accommodate this.
'We are committed to making Fidelity International an exciting and dynamic place to work so that we can deliver the best possible service to our clients.”
The plans will go into consultation in January 2018, where employees will be allowed to voice any objections to Fidelity’s plans for the office closure and role transfer.