Kevin was born in Newcastle-upon-Tyne in 1951. His mother Mary was an English and History teacher; his father Richard passed away in 1968. His brother Frank, is a University Lecturer in Drama.
He trained as an accountant before becoming an actor. He then trained in London as an actor at the Central School of Speech and Drama. Kevin is married to Madelaine Newton and has two children: Catherine (1983) and Kieran (1985).