Dr Alldritt graduated from the University of Adelaide in 1991. In 2006 he relocated his practice from King William Street, Adelaide, to Rose Park Dental.
Dr Alldritt has been very active in the dental profession, serving twice as the President of the Australian Dental Association SA Branch. Dr Alldritt is currently the Chairman of the national Oral Health Committee, which provides oral health advice and awareness campaigns to the Australian public.
In recognition of his contributions to the dental profession and the community, Dr Alldritt has been awarded three international fellowships as well as state and national awards.