In the early 1960s, Merz & McLellan started a scheme in the interest of reclaming land owned by the London Brick Company in Peterborough; James Price took up the position of senior resident engineer. This became known as the "Peterborough Dust Disposal Scheme".
In 1995 the partnership merged with the Parsons Brinckerhoff consultancy, and in 2000 the new owners announced that the Merz & McLellan name would be discontinued.[3]
In 2010, Mott MacDonald consultancy announced[4] that it had bought Merz and McLellan South Africa.[5]
1925: Report on electrification of the New Zealand suburban systems in Auckland, Wellington, Christchurch and Dunedin.[8] (including the Lyttelton railway line between Lyttelton and Christchurch[9]