Annette Walter-Lax modeled in the 1970s and dated Keith Moon from 1974 to his death in 1978. The two met in the summer of 1974, after a photographer asked Annette if she wanted to meet a "real drummer". He forced her to give up her modeling career like he did with his ex-wife, Kim Kerrigan. In 1975 the couple moved to Los Angeles and bought a house in Malibu. They spent three years there before returning to England. Once in London, Moon loaned Harry Nilsson's flat at 12 Curzon Place. Around this time he began telling everyone that he and Annette were going to be married, but there was never any official engagement. She appeared in the cover of Moon's Two Sides of the Moon. The couple were Paul McCartney's guests at a film preview of The Buddy Holly Story on the evening of 6 September 1978. After dining with Paul and Linda McCartney, Annette and Keith returned to their flat, where he died of an overdose of Clomethiazole (Heminevrin), a medication he was taking as part of a programme to wean him off alcohol. She was distraught and inconsolable at his death, and was heavily sedated during the funeral service reportedly collapsing at the Garden of Remembrance.
Eventually, Walter-Lax began dating British television actor Gareth Hunt. They were married in the early 1980s and had a son, Oliver, together. Currently Annette lives with her son in Stockholm after divorce from Hunt who died in 2007.