The move will provide administration services to Trafalgar House’s 1,500 defined benefit members, representing over £300m in assets.
Trafalgar House confirmed its activity was “well underway” following a transition period.
Daniel Taylor, director at Trafalgar House, said he was “very pleased” the firm had been appointed.
He added: “Throughout the transition process we worked closely with the scheme on a number of data improvement programmes to digitise historic records and develop the availability and robustness of the data.
“With ITN’s focus on member experience, something that is also core to our ethos, it was important we placed the scheme in good stead for communication requirements and future technological developments and improvements.”
Martyn Hurd, chairman of the trustees for the ITN Limited Pension Scheme, said: “Whenever you look for a new provider, you are always hoping to find a long-term partner that will genuinely share your values - and that is exactly what we found in Trafalgar House.
“They have already proven that we made the right decision, sharing our ‘can do’ approach throughout the process.
“The transition has been expertly managed, with Trafalgar House not only ensuring it went as smoothly and swiftly as possible for members, but also showing that it can be a valuable exercise to help build trustee understanding too.”
He added: “With member confidence and security the highest priority on both sides, we feel confident in a long-term partnership providing a consistent and strong service for all our members.”