Pin Property Consultancy has completed two deals totalling 11,000 sq ft to take the 58,000 sq ft Rutherford House to full occupancy.
IESA, a procurement and outsourced stores management company, signed for the entire fourth floor of 7,800 sq ft for its new headquarters.
Platform People, a specialist recruitment and consultancy service to the financial services sector, relocated from Thomson House, Birchwood Park to a fully fitted 3,200 sq ft suite at Rutherford House.
Imran Younus, a director of Pin, said: "We are delighted to welcome both of these excellent businesses to Rutherford House which is now fully let. It gives us great confidence to proceed with our other planned developments in the Birchwood area."
Eileen Bilton Partnership and DTZ acted as letting agents for Rutherford House.