Wat Phra Sri Sanphet UK is legally constituted as the Thai Buddhist South West Trust (WAT PHRA SRI SANPHET), a Charitable Incorporated Organisation (CIO) registered with the Charity Commission for England and Wales under charity number 1202315. The Trust was originally entered on the Register of Charities on 23 January 2017 and transitioned to CIO status in 2025 in order to strengthen its legal framework, governance structure, and trustee liability protection. It is located in Keynsham, a small town between Bristol and Bath in South West England, making the temple readily accessible from both cities.

The Temple operates under the patronage of the Most Venerable Phra Brahmvajiradibodi, Abbot of Wat Mahathatyuwaratrangsarit, Bangkok, Thailand, and under the auspices of the Buddhapadipa Temple, London, with the care and guidance of Venerable PM Bhatsakorn Piyobhaso, the founding Chair of the trust.