The Englishman on holiday? That is the theme of Roamin' Holiday, ATV's series starring Max Bygraves as the Englishman. The scene is the Italian Riviera Resort of Alassio. Against this setting, a holiday tonic to relieve the gloom of winter for viewers at home, the series will feature comedy situations and musical numbers. With Max at large in the town mingling with their residence and thronging holiday makers. Max's 13-year-old son Anthony, who sang with his father at the London Palladium last September, will appear in four episodes of the Roamin' Holiday.