1979 Waddingtons Sonic UFO space board game

Sonic UFO is a 1979 space-themed board game by Waddingtons where players race to be the first to fly their four UFOs back to Earth. Gameplay involves a "blindfolded" mechanic where one player, using a mask, must identify the landing spot of the large, moving "sonic UFO" by its beeps to move their own smaller UFOs, with correct guesses allowing for movement and "ZAP" moves to send opponents back to outer space. 

sold as seen - please see photos for detailed visual description. Missing electronic circuit/battery clip, instructions and cardboard space mask