When Raithe gets a readout on Garth, much is learned much about him. His ID number is 774833-BXL-8741, he was born May 22, 2767 (making him 23 years old), his Mother's name was Rebecca and his father's name was Old Garth. Cyprus Corers' biosphere designation is M-125. Interestingly, the readout gives his birth-date in Canadian (or British) as day-month-year, rather than the American as month-day-year, a byproduct of being filmed in Canada.
Series finale. At least two additional episodes were written but never filmed.
20 years later there was a one-season 25-episode British TV show, Space Precinct (1994). It was created by Gerry Anderson ( UFO (1970), Space: 1999 (1975) ) It starred American actors Ted Shackelford and Rob Youngblood. All of these shows are available on DVD.