Trinity has an active and lively alumni community programme, with OTs locally and worldwide continuing to stay in touch with news of the School, fellow OTs and former staff and getting involved in reunions, sports competitions and social events.

The Trinity Mid-Whitgiftian Association (TMWA) offers the opportunity for OTs to play competitive sports locally at the ground in Sanderstead or to use the School’s drama facilities as part of the thriving dramatic society, The Mitre Players.