This data is not currently collected in official statistics.

According to the TUC outsourcing is where an organisation ‘contracts out tasks, operations, jobs or processes to an external contracted third party for a specific period’. Typically, these are services which were undertaken ‘in-house’ in the past and can include both services provided by one business to another as well as services provided by a business to a government body. It’s not clear how these types of contracting arrangements could be identified in official statistics.