The National Procurement Service (NPS) is focused on developing centralised arrangements for the procurement of goods and services used commonly across the public service nationwide. The benefits arising from these central arrangements include: cash savings; administrative savings from reduced duplication of tendering; greater purchasing expertise; improved consistency; and enhanced service levels.
While it is felt that the NPS contracts for stationery and paper offer the best value for money on a national basis, it is permissible for buyers to purchase goods and services from non-NPS suppliers if these goods and services are demonstrably cheaper. However, where a public service body purchases such goods or services it may need to explain the rationale for not using the NPS arrangements and provide a value for money justification that takes account of the full costs incurred in managing its own procurement process.