UK businesses can now use the Comprehensive and Progressive Agreement for Trans-Pacific Partnership across all 11 partner markets after Canada became the final member to bring the UK’s accession into force.
The change took effect on 1 September, completing a process that began when the UK signed its accession protocol in 2023. The Department for Business, Innovation, Science and Trade said the economies of the CPTPP members, including the UK, had combined GDP of £12.9 trillion in 2025.
More than 99% of current UK goods exports to CPTPP members will be eligible for zero tariffs under the agreement. The government’s impact assessment estimates that accession could increase UK GDP by around £2 billion a year in the long run and increase bilateral trade with CPTPP countries by £4.9 billion compared with projected 2040 trade levels.
Canada ratified the UK’s accession in July, bringing CPTPP into force between the two countries on 1 September. The UK and Canada already trade under a bilateral Trade Continuity Agreement, so the latest step adds provisions including wider public procurement access and temporary business mobility rather than replacing an absence of preferential trade arrangements.
Eligible UK business visitors can now stay in Canada for up to six months under CPTPP, compared with a previous limit of 90 days in any six-month period for business visitors for investment purposes under the bilateral agreement. The two countries are also opening access to public procurement opportunities that were not covered by the earlier arrangement.
Beyond tariff schedules, CPTPP’s rules of origin allow qualifying inputs from member countries to be counted when determining whether a finished product is eligible for preferential treatment. A UK exporter buying components, materials, or subassemblies from several CPTPP markets can therefore have more options when configuring a supply chain, although the applicable rules remain product-specific and evidence of origin is still required.
The agreement also includes commitments intended to simplify customs procedures and address technical barriers to trade. Classification, origin evidence, documentation, and local compliance do not disappear, but a common framework can reduce some of the administrative variation faced by companies selling the same product into several member markets.
Commercial effects will differ by country and sector because the UK already had bilateral agreements with several CPTPP members before accession. The government has highlighted Malaysia as one market where UK exporters previously faced standard non-preferential tariffs on some goods, so the final accession step widens and standardises parts of the trading framework without producing the same tariff change everywhere.
Tariff reductions also differ by product and staging period. The government’s accession summary identifies UK cars exported to Malaysia as one example, with a 30% tariff scheduled for removal, while some engine and medicine exports to Vietnam receive faster tariff elimination than under existing bilateral arrangements. Those sector-specific schedules determine where the agreement changes landed costs soonest.
Manufacturers using regional sourcing also have to distinguish tariff eligibility from commercial practicality. A component may qualify under CPTPP rules yet still be uneconomic because of freight, lead time, certification, exchange-rate exposure, or minimum order quantities. The agreement broadens the set of qualifying trade routes; it does not remove the production and logistics calculations behind them.
Engineering mobility can be as important as the movement of goods. EmTech Hatchery Systems, a UK manufacturer of poultry incubation and ventilation equipment, has used CPTPP mobility provisions while exporting technology to Peru and Mexico, where installation, training, and after-sales work require technical staff to travel with the equipment they supply.
Industrial machinery sales commonly bring commissioning, maintenance, training, upgrades, and troubleshooting after delivery. Longer business-visitor allowances and clearer mobility provisions can make that support easier to plan, particularly when equipment is sold into distant markets where local service capability may take time to establish.
CPTPP membership is also designed to accommodate expansion. The UK’s original impact assessment excluded the potential economic effect of future members from its formal modelling, so further enlargement would change both the scale of the market and the supply chains able to use the agreement’s common rules.
Canada’s ratification completes the UK accession process, leaving utilisation as the practical measure of value. Preferential tariffs depend on exporters meeting origin rules, procurement access depends on suppliers competing for contracts, and mobility provisions matter only where companies use them to support real projects. The framework is now in place; the industrial return will come from the orders and investment that follow.
