Yorkshire Building Society Group (YSB) has announced plans to close a number of branches, as part of changes to two of its high street brands.
Barnsley Building Society and Chelsea Building Society branches will both be rebranded Yorkshire Building Society, and in 18 locations where YSB currently has two branches under either of the brands, they wil be merged.
Four Barnsley Building Society branches are to be closed.
The group said the plans are "aimed at delivering better long-term value and improved services for its 3.1m members through greater efficiencies". It aims to have all the Barnsley branches rebranded in July, and the Chelsea branches rebranded in September.
YSB has entered consultation with 13 employees.
The building society's chief exec, Chris Pilling, said: "Our branch network always has been, and remains, at the heart of our business, providing the face to face service that many of our members prefer.
"These planned changes will make us more efficient and will deliver greater long-term value to both new and existing members. They will also help us to support the changing needs of our members."