As well as giving practical support to families with disabled children, Owen Spencer-Thomas headed several successful major charity appeals and raised millions of pounds for adult accommodation. He was the Founder Chairman of the East Anglian Autistic Support Trust (EAST) which established the first and desperately needed specialised accommodation and daycare for adults with autism in Cambridgeshire. He served on the National Autistic Society (NAS) Council from 1996 until 2002 and continues to raise funds for a range of other charities.