 In 1971, Allan joined Delivery with British keyboardist Steve Miller, replacing Pip Pyle who went on to join Gong.In 1972, Allan then joined Gong, again replacing Pyle.Allan left Gong in 1973 to join a new Delivery line-up, but this was short-lived and soon broke up; Allan did appear on Miller and Lol Coxhill's "The Story So Far/Oh Really?"