When young (1983) Gerry Standing rocks baby Caitlin, he says to her, "Its alright. Its okay". These, of course, are the first words of the theme song as sung by Dennis Waterman (Gerry Standing).
The music playing in the scene before the opening credits is similar to the theme from Die Füchse (1975) that Dennis Waterman starred in in the 70's with John Thaw.
In the opening scene, a young Gerry Standing from 1983, is talking to a young WPC.
DCI Ackroyd says to her that's all Sandra and says to Gerry that he should leave her alone as she is Mr. Pullman's daughter.
Little did he know that she would one day be his boss at UCOS.
Young Gerry's brown jacket is a nod to the costume Dennis Waterman wore as George Carter in Die Füchse (1975).
Larry Lamb (Ted Case) is not credited in this episode, despite replacing Dennis Waterman (Gerry Standing) in the next.