The Financial Times reported that Eustice and Cabinet Office minister Michael Gove were at loggerheads with International Trade Secretary Liz Truss and Brexit minister Lord Frost over granting tariff-free access to Australian farmers under any proposed deal.

The newspaper reported that doing so could spark a backlash from the UK farming industry due to the impact of potential zero-tariff imports of lamb and beef.

But Truss considers the first major post-Brexit trade deal a "crunch point" with a desire to finalise it before June's G7 conference in Cornwall.

Eustice said: "I'm not going to get into discussions that are going on in Government about individual trade agreements.

"In any discussion on any part of Government policy, and trade agreements are no exception, there's a discussion and there's a consensus.

"At the moment there's a very clear consensus in Government that we want to do a trade agreement with countries like Australia, but obviously on the right terms."

Eustice said there was a "balance to be struck" between opening up trade and protecting domestic industries, a view shared by the National Farmers' Union (NFU).

British farming will struggle to compete if zero-tariff trade on lamb and beef goes ahead, the president of the National Farmers' Union (NFU) has said.

Following a meeting of the UK Farming Roundtable, which includes 19 farming bodies, NFU president Minette Batters said: "We know that if we're to open up the opportunities of new markets overseas for UK farmers, we will have to offer greater access to our own markets in return.

"However, this trade-off needs to be balanced, and we need to make sure concessions to our hugely valuable home market are not given away lightly.

"There is a very real risk that, if we get it wrong, UK farming will suffer irreversible damage rather than flourish in the way we all desire, to the detriment of our environment, our food security and our rural communities."

Eustice told Sky News: "We think there's great opportunities, we're very keen for instance to pursue trade agreements with Australia and also with the United States and with other countries as well.

"But always in any trade agreement, yes there's a balance to be struck between your commercial interests and your desire to open up free markets."

He added: "I have very good discussions with all of my Cabinet colleagues on all issues where we have got a shared agenda."

It comes after Truss said she would officially start trade talks with Canada and Mexico, adding to those under way with India, Australia and New Zealand.

She also told the Express that the UK was preparing to start talks to join the Comprehensive and Progressive Agreement for the Trans-Pacific Partnership.

Truss said: "We will be the first non-founding member to join this high-standards pact, opening a huge gateway for UK businesses to 11 vibrant Pacific markets."

Australian Associated Press