Since 1997, Crathorne has been vice president of The Public Monuments and Sculpture Association (PMSA), and since 1998 he was president of the Cleveland Mountain Rescue Team. Since 1999, he has been also president of the North Yorkshire County Scout Council, patron of the North Yorkshire Branch of the British Red Cross, as well as member of the court of the University of York and the University of Hull. Crathorne was vice-president of the Yorkshire and the Humber branch of the Reserve Forces and Cadets Association (RFCA) since 1999, and its president from 2006 to 2009. He was further vice-president of the RFCA in North England since 2001, president of the Cleveland and South Durham branch of the Magistrates' Association since 2003 and patron of the Tees Valley Community Foundation since 2004. He was President of The Yorkshire Agricultural Society in 2014–15.