I have a UITableView in the grouped style, and only one section. However there is some blank space above and below the table view that is shown when the user scrolls too far. Ho
You can do this by altering the contentInset property that the table view inherits from UIScrollView.
contentInset
UIScrollView
self.tableView.contentInset = UIEdgeInsetsMake(-20, 0, -20, 0);
This will make the top and bottom touch the edge.