Mr Read previously worked as managing director of international building materials company Hanson Continental Europe, a post he had held since 2004. Previously was head of corporate development.
The Haydock-based tool hire company said Mr O’Brien would step down as group financial director on April 1 and would leave after a handover period.
Speedy chief executive Steve Corcoran said: “We are delighted to welcome Justin to Speedy Hire. His broad experience gained in global business will be invaluable and we look forward to his contribution as the company maintains its continued growth and expansion.”