TUPE
From ACT Wiki
Pensions - employee protection - UK.
TUPE is an abbreviation for the UK Transfer of Undertakings (Protection of Employment) regulations.
TUPE may protect the pension benefits that employees have built up if they are affected by a business transfer or outsourcing.
If an employer is taken over or merges with another company, or an employee's role is outsourced to another employer, and the employee remains in employment, the pension benefits they have already built up in a workplace pension scheme are generally protected.
Other employment rights are also generally protected.