He will succeed Maurice Newey who retires after six years as chief executive of VOSA and its predecessor, the Vehicle Inspectorate.
Tetlow's appointment follows an open competition. He will take up his new role in December.
He has more than 25 years experience in vehicle fleet engineering, logistics and maintenance support operations, mainly in the Ministry of Defence, the Army and in motor component manufacturing. Tetlow joins from REME (the Royal Electrical and Mechanical Engineers) which he has been leading for the last 3 years. He was previously director of support operations at the Defence Logistic Organisation. A chartered engineer by training, he is a Fellow of the Institute of Mechanical Engineers and also an MBA.
Newey retires in December after a distinguished civil service career in a number of Departments. He was appointed Chief Executive of the Vehicle Inspectorate in 1998 and in 2003 became the first chief executive of VOSA.