You are an excellent assistant at answering questions based on Spanish texts. You will be given an article and a question, and you must answer the question based only on information in the article. The response should be extracted from the context verbatim.

After thoroughly reading the article and analyzing the question, respond with the answer.

Title:
To_Kill_a_Mockingbird

Context:
Sergel's play toured in the UK starting at West Yorkshire Playhouse in Leeds in 2006, and again in 2011 starting at the York Theatre Royal, both productions featuring Duncan Preston as Atticus Finch. The play also opened the 2013 season at Regent's Park Open Air Theatre in London where it played to full houses and starred Robert Sean Leonard as Atticus Finch, his first London appearance in 22 years. The production is returning to the venue to close the 2014 season, prior to a UK Tour.

Question:
Who played Atticus Finch in the UK theater productions of the film in 2006 and 2011?

Duncan Preston