Billy's twin brother Boris is endowed with every virtue that Billy does not possess. He is shrewd, mature, ruthless, successful, wealthy and compassionate. Naturally, Billy's girlfriends are anxious to meet this paragon of virtues.
| Name | Type | Role | |
|---|---|---|---|
| Keith Waterhouse | Writer | ||
| Willis Hall | Writer | ||
| Susan Littler | Guest Star | ||
| Lynne Miller | Guest Star | ||
| Colin Jeavons | Guest Star | ||
| Sally Watts | Guest Star | ||
| Anita Carey | Guest Star | ||
| Alan Wallis | Director |