You asked

Please provide the following:

  • The number of mail items sent per year by the Office for National Statistics from 2012 to 2017 through an external mail provider (e.g. Royal Mail or TNT)

  • The proportion of these mail items sent through Royal Mail vs. other mail providers annually from 2012 to 2017

We said

Thank you for your request.

The annual count of mail items is provided below.

Mail is primarily posted via our contract with UK Mail, and where this is not possible, via Royal Mail. We do not hold a breakdown of this information and so are unable to provide a proportional split.

2012 - 3,045,796

2013 - 2,857,711

2014 - 2,506,562

2015 - 2,648,212

2016 - 2,436,791

2017 - 2,444,163

2018 - 2,047,301