Tyler becomes good friends with Annie Cartwright (Liz White) and she is the only character in the programme to whom he reveals his true situation. Tyler also becomes friends with Chris Skelton (Marshall Lancaster) who attempts to learn from Tyler's modern policing methods, and is introduced to tape-recording interviews by Tyler, something which was not standard procedure in the 1970s. However, Tyler often clashes with Ray Carling (Dean Andrews), as he views Tyler as stopping him from being promoted to Detective Inspector.