Since I posted this originally an email has come in from Larry Devlin, pointing out a few corrections and these are always welcomed, so I've made the corrections, noted in green....
His racing career in the IOM TT spanned from 1923 when he retired on a Junior Matchless to 1937 when he won the Junior TT and retired in the Senior TT.....riding in 24 TT races in all.
He ran a business in Hawick, Scotland in the 1930's.....
Whilst he was always associated with the Norton Racing Team, in the 1930 Lwt. IOM TT he rode an AJS, winning the event....he pictured to the left.
#20, starting the 1933 IOM Junior TT on a Norton...Guthrie finished 3rd.
#2, starting the 1934 Junior IOM TT race which he won.
At the 1934 French GP at Dieppe.