Chuckle Brothers for the 2013 Christmas special. On 13 March 2015, they appeared again on Comic Relief, this time in a sketch based around "National Treasures". The duo appeared at the 2016 "Royal Variety Performance", performing sketches with host David Walliams. In April 2018, it was announced the brothers were in the process of recording a new clip show for Channel 5, entitled "Chuckle Time"; It ran for one series during the summer of that year, although it was cut short following the death of Barry Elliot in August 2018. As well as regular TV appearances, Paul and Barry appeared on stage
The Wright Brothers (book) McCullough recalled, "I didn't know when (chronologically) I was going to end that book, and who do I run into in France but the Wright brothers." He continued, "I was delighted to find that Wilbur, at every chance, went to the Louvre to look at paintings, and the degree that he was moved by the great Gothic works of France was far beyond that of an ordinary tourist. [...] Much of what has been written about the Wright brothers (in French) has been ignored. That's what pulled me into doing the book." McCullough has had a lifelong interest in aviation.