Police were called at 7.45pm to the China Palace Restaurant in Chapel Road, Worthing, last night (Thursday) after staff reported that two men were behaving in a drunken manner and had refused to settle their bill for food and drink.
Both men climbed from a first-floor balcony onto an adjacent building.
One then returned to the restaurant but the other remained on a rooftop for almost an hour and a half before he, too, returned.
Firefighters stood by in case of need during the incident.
A 43-year-old man from Shoreham and a 40-year-old man of no fixed address have been arrested on suspicion of making off without payment and both have been detained for questioning.