Britain's accession to the Trans-Pacific Free Trade Pact will have a positive, but small, economic impact, because the Kingdom's trade volume with CPTPP members is fairly manageable.
Less than a tenth of Britain's exports go to Japan, Canada, Australia, Mexico, Malaysia, Singapore, Vietnam and Chile. The growth effects of this first major "post-Brexit treaty" will therefore be very limited for "Global Britain".
Nevertheless, accession is a welcome signal for free trade. Nevertheless, a stale aftertaste remains: London may assure so much that Britain is an economic nation that advocates free trade. Since Brexit, a new obstructive customs bureaucracy has emerged on the English Channel, which burdens business with the main trading partner, the EU countries.
From the point of view of Asian market economies, however, London's accession to the CPTPP is undoubtedly a win, also because it strengthens the counter-proposal to the RCEP trade zone, which China dominates.