There are revisions to RTS as a result of an enhancement to the way trade is regionally distributed. These will be applied in the quarter one 2015 release published on 4 June 2015. All RTS data from 2013 onwards has been revised to implement this change. This allows us to make year on year comparisons in the 2015 quarter one release on the same basis.
The change has predominantly resulted in EU trade that was previously allocated to the Unknown region now being allocated to the region where the main reporting unit of the business is located. It will also affect smaller amounts of non-EU trade.