Allister Bowtell was a freelance model maker who made various costumes for 1970s Doctor Who. Among his credits included providing the furs worn by the Spiridons in Planet of the Daleks (INFO: Planet of the Daleks) and the costumes for the Cybermen in Revenge of the Cybermen. (INFO: Planet of the Daleks) He also made Omega's costume that was seen in The Three Doctors, working to costume designer James Acheson's designs. He provided the prosthetic head worn by actor Simon Jones for Jones' role as the Grand Master in the stage play The Seven Keys to Doomsday. (INFO: Planet of the Daleks)
Bowtell never received credit on any Doctor Who television story.