When trade secretary Kemi Badenoch formally signed Britain up to the CPTPP Indo-Pacific trade bloc last weekend, it was the biggest shift in trade policy in a generation. Covering countries such as Japan, Australia, Malaysia and Vietnam, the CPTPP represents the world’s single largest trade bloc, with a combined GDP of $12trn, or 15% of global output. It is easily set to outstrip the EU, partly because all its members, with
