Simplify the following text for a Grade 14 native English-speaking person.
Original: Nationwide Building Society is authorised and regulated by the Financial Services Authority for life assurance , pensions , investments , insurance and regulated mortgages .
Simplified: Dunfermline Building Society is a trading division of Nationwide Building Society which is authorised and regulated by the Financial Services Authority under registration number 106078 . Credit facilities other than regulated mortgages are not regulated by the Financial Services Authority .