Algeco acquired Mobile Mini earlier this year adding 375 employees and an annual revenue of approximately £80m.
The move will result in some job losses starting with the proposed closure of the Algeco Peterborough office.
Keith Dorling, UK Managing Director, said: “We are executing a transformational change to position Algeco for long-term growth. As part of this effort, the leadership team is evaluating a range of options for our combined businesses.
“Algeco in the UK is well-placed for long-term growth, and we are assessing how the combined businesses can unlock value for customers.”
“Bringing together several successful organisations has presented the need and opportunity to really identify what structure we believe will enable Algeco and our people to thrive.
“We have undertaken an extensive analysis of our organisations over the last few months to better understand how we can leverage our customer proposition.”
It is expected that the change will be completed by the middle of next year.
Algeco said: “We are proposing a number of redundancies across our combined organisations, subject to consultation at the relevant times. We will be seeking to minimise compulsory redundancy through redeployment opportunities.”