YPO are looking for suppliers to be appointed onto a dynamic purchasing system (DPS) for the provision of school uniforms. The DPS is designed to meet the needs of all public sector organisations which includes YPO’s internal requirements. Logo’d School Uniform Logo’d school uniform. Standard School Uniform Standard school uniform. School Sportswear School sportswear. Accessories – Ties, Book Bags and Sports Bags etc. Accessories – ties, book bags and sports bags etc.