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Post Sale Transition for OnStream


Following the sale of OnStream, National Grid required specialist support in undertaking the transition to the new owner, together with enablement of the associated service providers.

What we did

DNASTREAM was approached to manage transition of OnStream’s IT application estate and contracts following the sale of the business by National Grid.


We developed the application and services transition plan which was required to take account of the strict constraints applied by the industry regarding application outages. DNASTREAM detailed the application migration approach for the financial and asset information that was to be transferred into Macquarie’s systems, as well as developing the approach and plan for transition of the services in conjunction with G4S and the industry customers including National Grid Gas, Northern Gas Networks and Scotia Gas Networks 


We were able to provide industry subject matter expertise relating to data loggers and the associated applications and networks. We defined and established the new support arrangements for the applications migrated to G4S with the application support function.


The transition from National Grid was successfully achieved on time and significantly under budget. There was no disruption to customers during the transition process or thereafter. We worked as a team with all stakeholders to establish strong and trusted relationships with the industry participants and stakeholders.

This was a successful programme delivery with a complex stakeholder landscape – National Grid, Macquarie, G4S, industry customers and partners.

What we say

"National Grid approached us as a result of having successfully delivered several projects within National Grid, and in large part due to our previous experience of the OnStream business and its application estate. It made us the obvious Partner to support this complex project."

Andy Milner, MD, DNASTREAM

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