CFE finished around 1980/1981 and from the ashes sprung Saxon. Which later became Saxon Sanbec (1990ish i think) and thats died a death around 3 years ago. (i have a 1982 saxon motor with orignal CFE branded guages fitted!). I was once told Locomotors were bought out by Saxon apparently along the way. The D reg London Dodges being locomotors, and the exact same bodywork branded saxon appeared on the E regs. But I know of locomotors branded F reg special appliances in Tyne and Wear, so im not totally convinced of this.
Mountain Range were still going in the 1990s, I know Bucks had some H reg volvos with mountain range bodywork, and Central scotland had an ET on a H also, which makes it at least 1992, although i cant seem to recall anythign after that year..?