Stock was born in Malta, the son of an Army captain, and grew up in India before attending St Paul's School, London and the Royal Academy of Dramatic Art, where he earned the Leverhulme Exhibition, Northcliffe Scholarship, and the Principal's Medal.
Stock was born in Malta. Stock grew up in India before. Stock was attending St Paul's School. Stock was attending London. Stock was attending the Royal Academy of Dramatic Art. The son of an Army captain was Malta. He earned the Leverhulme Exhibition. He earned Northcliffe Scholarship. He earned the Principal's Medal.