I am Liz's son Leigh. I too have been wondering and at times trying to find out what happened to Martin. He was such an inspiration to me musically as he lived with us for 10 years or so. I am a musician (mainly drums but also guitar, bass and a bit of piano) and it's all down to Martin and Grahams influence on me as a boy. I have changed my surname since then to Stothard. If anyone comes across him please tell him I am looking for him. Thanks.