He then returned to Thomas in 1991, and began co-writing original scripts with Britt Allcroft - a trend which continued until the 5th Television Series.  After this, scripts fell to individual writers, however, David was seen to provide the basis for some story material throughout the 6th Series, making two contributions himself over the  6th and 7th Series, prior to leaving the series in 2003, following the HIT Entertainment takeover.

 
After his depature, David began working with Gerry Anderson legend and personal friend, David Lane, with their own new company Pineapple Squared Entertainment where he acted as Creative Director for several properties.  Between 2006 and 2008, David shared correspodence with Sodor Island Forums, and gave great insight into his time on the set of Thomas and TUGS.  However, in May 2008, prior to the launch of their production, Adventures On Orsum Island, David suffered a heart-attack and died soon after.  We are honoured to have had the time to speak to him, and even consider him a friend.