The House of Commons has switched providers for the administration of its defined benefit pension scheme.
The scheme currently has approximately 2,000 members, who are or have been Members of Parliament.
Sir John Butterfill, chairman of trustees for the fund, said: "We are keen to work with RPMI as [it has] demonstrated a very strong commitment to quality and accuracy through their investments in people and technology. [It has] shown us that they understand the needs of Parliament and can deliver a high standard of pension service for our members.
"This low-risk and member-focused approach is something that fits well with our requirements for the administration of the fund."
Pensions services provider RPMI will administer the scheme from June.