I am sorry to learn of the sad loss of a friend and colleague.  I knew Graham through his membership at the Ipswich Model Engineering Club and also the East Anglian gauge 1 group. I had many interesting and sometimes humorous chats about engineering, trains,  politics et al.  He was always courteous and never spoke ill of anyone, he was well respected and liked by others.  My sympathy and condolences go to his family.  May he rest in peace.
Roger Humphreys