Tags British Ambassador to Viet Nam Iain Frew UK's accession to CPTPP unlocks more bilateral trade Thursday, Apr 06, 2023 The British Ambassador to Viet Nam Iain Frew spoke to Viet Nam News about the UK''s trade opening and its impact on Viet Nam-UK trade relation. UK, the first European country, to join CPTPP Friday, Mar 31, 2023 CPTPP accounted for 12 per cent of the global GDP in 2021 and this would rise to 15 per cent with the UK’s accession.