death of his son.Last month, Nicholas’ 19-year-old son Archie tragically died following a short illness at the family home in London.David and Nicholas played on-screen brothers on the beloved comedy show for over two decades.And now Nicholas is leaning on his big brother after admitting that he is ‘utterly grief-stricken’.David and Nicholas have remained close after the show came to an end in 2003, The Sun reports.‘As soon as David became aware of what had happened to Archie, he was in touch