Fat Boy puffs along at top of UK box office

LONDON, Sep 19 (Reuters) ''Run, Fat Boy, Run'' held on to its UK box office lead over the weekend, edging out new high school comedy ''Superbad,'' according to Screen International figures.

The story of a flabby security guard signing up for a charity marathon to impress an old flame -- the directorial debut of ''Friends'' star David Schwimmer -- took 1.54 million pounds in its second week, reports told yesterday.

That was just enough to pip ''Superbad'' and its three schoolfriends on the trail of booze and sex which took 1.48 million to open in second place.

Third, down one, were Keira Knightley and James McAvoy in the screen version of Ian McEwan's acclaimed novel of guilt and remorse ''Atonement.'' Fourth, also down one, was former chart-topper ''The Bourne Ultimatum,'' while new at five was ''Disturbia,'' a thriller about the perils of voyeurism.

''Knocked Up,'' the story of a mismatched couple with a problem after a night of passion, was down two at six.

New at seven was Clive Owen in frantic lowlife gunfest ''Shoot 'em Up'' which came in just ahead of ''3.10 to Yuma,'' a remake of the 1957 classic Western with Russell Crowe as the outlaw and Christian Bale as the rancher who has to take him to justice.

At nine, down four places, was John Cusack in horror movie ''1408,'' based on Stephen King's tale of a writer stuck in the hotel room from Hell.

At 10 down from six after eight weeks in the UK chart, was ''The Simpsons Movie.'' REUTERS SS BST0900