He was the youngest son of William Strahan (1715–1785), and carried on his father's business with success, becoming one of the joint patentees, with John Reeves and George Eyre as the King's Printer. He retired in 1819. Between 1796 and 1820 he sat in Parliament successively for Newport, Wareham, Carlow Borough, Aldeburgh, and New Romney.
- Cochrane, J. A., Dr Johnson's Printer : The Life of William Strahan, 1964
- Hansard 1803–2005: contributions in Parliament by Andrew Strahan