Star Fleet was a Japanese sci-fi puppet show similar to Jerry Anderson's "Terrahawks". The dubbed UK version of Star Fleet was shown on Saturday mornings on ITV in 1982.
Set in the year 2999, just after the end of Space War III, the Galaxy is war-torn but at peace... until, of course, the Solar System is invaded by the Imperial Alliance in search of a supreme being, the F-01. The experimental X-Bomber spacecraft and its young crew must discover the secret of F-01 and turn it against the Imperial Alliance or all will be lost.
There were four main puppet characters who each had a ship which, when conected together, became a robot called Di-X.