| Cast |
| Host | Hughie Green |
| Comedian | Les Dawson |
| Singers | Peters and Lee |
| Comedian | Tom O'connor |
| Singer | Lena Zavaroni |
| Comedian | Frank Carson |
| Comedy Double Act | Little and Large (comprising straight man Syd Little and comic Eddie Large) |
| Folk Singer | Mary Hopkin |
| Poetress | Pam Ayres |
| Comedian / Samuel Tweet | Freddie Davies |
| Singer | Berni Flint |
| Singers / Group | Duane Family |
| Singer | Neil Martin |
| Vocal Duo | Millican & Nesbitt (comprising Alan Millican and Tom Nesbitt) |
| Musical Muscle Man | Tony Holland |
| Crew |
| Music | Bob Sharples |
| Sound supervisor | Arthur Duff |
| Vision controller | Alan Fowler |
| Vision mixer | Nick Bigsby |
| Lighting director | Bill Lee |
| Graphic designer | Lester Halhed |
| Designer | Michael Minas |
| Senior cameraman | Mike Baldock |
| Floor manager | John Lynton |
| Floor manager | Stuart Orme |
| Studio supervisor | John Eveleigh |
| Director | Stuart Hall |
| Production assistant | Bridget Moore |
| Programme Associate | Doris Barry |
| Programme Associate: | Len Marten |
| Producer | Peter Dulay |
| Production Company | Thames Television |
Some categories are displayed but not linked because they serve specific functions and are excluded from the Categories page.
Thames-Television
Opportunity-Knocks
Hughie-Green
Les-Dawson
OnThisDay20March
Year-1978