LONDON--(BUSINESS WIRE)--Northgate Information Solutions (NIS) today announced the sale of its Public Services division to Cinven, a leading European private equity firm, for an undisclosed amount. Northgate Public Services (NPS) is an integrated software, outsourcing and IT services business with deep experience in the public sector. NPS helps organisations in the UK and around the world to deliver more efficient and effective public services, working with local and central governments, health