There's no single list of "UP accredited to go in Singapore". Accreditation isn't a blanket approval for a university to operate in another country. Instead, it depends on the specific programs, the type of operation (e.g., branch campus, collaborative research), and Singapore's regulatory bodies (primarily the Council for Private Education (CPE) for private institutions and relevant ministries for public ones).
A UP university wanting to offer programs or operate in Singapore would need to navigate Singapore's educational regulatory framework and obtain the necessary approvals on a case-by-case basis, rather than having a pre-existing blanket accreditation. Each program or initiative would require its own assessment and approval.