The government has survived an attempt by pro-EU Conservative MPs to change its post-Brexit trade strategy.
The MPs wanted the UK to join a customs union if it does not agree a free-trade deal with the EU.
But the government, which says being part of a customs union will prevent it from striking international trade deals, won the vote by 307 to 301.
It did, however, lose a separate vote on its Trade Bill on the regulation of medicines after Brexit.
MPs backed an amendment that would keep the UK in the European medicines regulatory network.
Government survives EU customs union vote}