Wolstencroft was born in Honolulu, United States in 1969 and grew up in Edinburgh, Scotland, studying at George Watson's College, where he was Head Boy.
While at Cambridge, he was active in the Footlights where he collaborated with Mark Evans, Sue Perkins, Andy Parsons, Alexander Armstrong and Ben Miller, and had served as Footlight's vice president and revue director.
[2] Wolstencroft won the Royal Television Society's Network Newcomer award after producing his first drama Psychos for Channel 4 in 1999.
The pilot episode was watched by over 9 million people (a 41% share), and the series won a number of BAFTA awards and nominations.
Wolstencroft's debut children's book The Magic Hour, a fantasy adventure, was published in 2023.