The Pensions Administration Standards Association (PASA) has increased the size of its board to avoid a contested election.
It will have 13 board members, instead of the previous 12, so dispensing with a ballot after seven candidates stood for six places in its annual elections.
Four new faces are Gary Evans of Mercer, Michael Mann of Ensign Pensions Administration, Richard Thomas from Punter Southall and Deborah White from Capita Employee Benefits.
They join existing board members under chair Margaret Snowdon: Mark Adamson, Karen Bennett, Fergus Clarke, Sara Cook, Peter Dyer, Kim Gubler, John Simmonds and Debra Soper.
The board now has eight third-party administrator members, two from in-house schemes and three independents.
Snowdon said: 'This election was unusual in that we had six vacancies to fill and seven very good candidates.
'Rather than go to a ballot and lose one of the seven, we decided to increase the board number to 13. I am very pleased with this outcome, as it allows us to retain expertise and also to bring in some new blood.'
PASA has elected at least one third of its board of volunteer directors each year since it was formed at the end of 2011.