John White would later star in The Cuckoo Clock of Doom (1995) - again as a boy who experienced time-travel.
Sardo's third appearance, his fourth and fifth appearances would be in "The Tale of Cutter's Treasure: Part 1 (1994)".
First mention of Bobo, Sardo's competition and possible rival. Bobo finally makes his appearance in the series revivals episode "The Tale of the Time Trap (2000)".
Aidan Pendleton who portrayed Alison Denny reappeared in the series again two seasons later. She reappeared as Gwen in the episode "The Tale of Badge (1995)".