This diverse collection of British imports has been one of the finest recent additions to the New York theater scene , and its new crop includes shows that were produced or in development in London at the National Theater -LRB- '' Defying Hitler '' by Sebastian Haffner -RRB- , the Bush Theater -LRB- '' After the End '' by Dennis Kelly -RRB- and even the West End -LRB- '' Private Peaceful '' by Michael Morpurgo -RRB- .