Johnson, who took over as prime minister two weeks ago, has taken a hard line with the European Union, demanding that it show willingness to change the divorce deal it agreed with his predecessor before negotiations can restart to secure Britain's smooth departure from the bloc. It hasn't yet received a response.
Such a deal has been held up by Brexit supporters as one of the great prizes of leaving the European Union, and Raab said he wants one as soon as possible after October 31.
Currently, the Competition and Markets Authority forbids such coordination to avoid price-fixing, but the Food and Drink Federation (FDF) has asked for assurances that fines would not be applied if companies worked together to tackle shortages.
"If we do leave without a deal on October 31 there will inevitably be bumps in the road", Gove told BBC TV on a visit to Dover. Those who can remember the war, that took a long time to put into place and it was pretty haphazard and pretty unfair.
"But I think if the EU's position is that there can be no change to the withdrawal agreement, then that would be a choice that they've made, and that makes it very hard to see how we can move a negotiation forward".
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After three years of Brexit discussion, it is still unclear on what terms Britain will leave the European Union.
"The industry's recently published "Plan for Success" demonstrates how we can make the UK's £4 billion food chain the most dynamic, sustainable and competitive in the world", the FDF said in a recent statement.
"He was effusive in his warmth for the United Kingdom - it was incredible to hear an American president talk about our country in such warm terms", said Raab, who met Trump in Washington on Tuesday.
Raab said "there's obviously going to be a lot of work to make that happen", but added that Trump had been "effusive in his warmth" for Britain.
Earlier, in a Twitter posting, Mr Raab mentioned that he had held "large-ranging talks" with Mr Pence on a collection of points together with China, Iran and a submit-Brexit trade deal.
Mr Summers told the BBC Radio 4's Today programme that the United Kingdom was in a weak position when in talks with trade partners, adding that the United Kingdom had "no leverage" and was "desperate".