Jon Richardson investigates OCD. Is he simply a demanding perfectionist or does he have obsessive compulsive disorder?
| Actor | Role |
|---|---|
 Jon RichardsonHimself - Presenter | Himself - Presenter |
| DDanny BucklerHimself | Himself |
 Russell HowardHimself | Himself |
 Tom RosenthalHimself | Himself |
| MMark OlverHimself | Himself |