DEFRA does not hold this information. However, emissions estimates are submitted under the United Nations Framework Convention on Climate Change (UNFCCC) which is the parent treaty for Kyoto protocol and the Montreal decisions. These emissions data are available on the UNFCCC website at: http://unfccc.int/2860.php
Annex I Parties to the UNFCCC (including all EU countries, and Russia, the US and Japan from the G8) submit emissions inventories annually; the most recent year for which data are available is 2003.
The most recent data that non-Annex I Parties (including China from the G8) to the UNFCCC have submitted is for 1994.
The UNFCCC emissions data are not collected on a per capita basis.