Negotiations between the UK and Canada on a post-Brexit trade deal have broken down after nearly two years, following a row over beef and cheese.
Canada has been pushing for the UK to relax a ban on hormone-treated beef, which its producers say in effect shuts them out of the British market.
Meanwhile, the UK has concerns about Canada putting import taxes of up to 245% on British cheese products.
The pause in talks mean British car firms could also face higher tariffs.
It will also mean the UK's trading terms with Canada will now be worse than when it was part of the EU's deal with the country.
Minette Batters, president of the National Farmers' Union of England and Wales, said she was glad the UK government had not "given way" on hormone-treated beef.
Trade between the two countries currently takes place under the terms of a deal the UK rolled over from its time as an EU member.
A time-limited agreement allowed the UK to continue to sell cars and cheese without high import taxes.
But talks about extending these as part of a new deal have now broken down.
It marks the first time the UK has formally suspended talks with a trade partner since formally leaving the EU trading regime in 2021.
Talks between the two countries on reaching a bespoke agreement have been taking place since March 2022.
A spokeswoman for the UK government said it reserved the right to "pause negotiations with any country if progress is not being made".
"We have always said we will only negotiate trade deals that deliver for the British people," they added.
"We remain open to restarting talks with Canada in the future to build a stronger trading relationship."
'Relief' for UK farmers
A UK government source said: "If Canada comes back to table with a serious offer and a desire to make progress we're all ears."
A spokeswoman for Canada's trade minister Mary Ng said she was "disappointed" at the pause in talks, and had communicated this to UK Business Secretary Kemi Badenoch.
"Their decision to continue to maintain market access barriers for our agriculture industry and unwillingness to reach a mutual agreement has only stalled negotiations," the spokeswoman added.
"The UK is a long-standing trading partner and I am confident that we can negotiate an agreement that is win-win for Canada and for the UK.
"But let me be clear - we will not negotiate an agreement that is not good for Canadians - and not good for our Canadian businesses, farmers and workers".
Total goods trade between the two countries was worth £19.2bn in 2020, according to the UK government, with UK imports from Canada worth £7.3bn and UK exports to Canada worth £11.8bn.
Ms Batters said the UK's decision would be a "relief for farmers".
She told OceanNewsUK she was pleased the "government has stuck to its line and not given way".
"We have already damaged our economy and agricultural sector by fully liberalising on trade deals with Australia and New Zealand. We had to take a strong line on this."
The Canadian Cattle Association said it backed its government's "hard-line approach" on beef rules, adding that the UK had "shown no indication that it is prepared to fully accept Canada's food safety system which is widely recognized as one of the finest in the world".
