Its purpose was to offer specialist advice and funding for further education to national, multi-site employers with more than 5000 employees.
The service worked with 150 companies including BT Group, Sainsbury's, Tesco and McDonald's.
First established in 2003 as the National Contracting Service, its role evolved from centrally delivering government funding towards working in partnership with large employers, providing specialist advice on the development of large scale work-based training programmes.
This co-investment approach to frontline training involved channeling public investment to areas where it delivered the greatest value for money.
In a speech on the subject, the then Conservative party leader David Cameron incorrectly identified the National Employer Service as a Quango in its own right.