The legislation will have its Committee Stage reading this afternoon ahead of the next round of formal talks between the UK and EU next week. The bill sparked controversy on the continent following its introduction to the Commons earlier this month. However, Mr Johnson agreed a deal with Tory rebels in order to stop a potential revolt. The compromise means MPs will be given a vote on when to use the powers within the UK Internal Market Bill.
UK and EU officials will hold informal talks later this week as the two sides attempt to agree a deal.
If the legislation passes, some EU officials have threatened to take legal action against the UK.
One EU diplomatic source told Express.co.uk: "What we have discussed amongst ourselves is that we will take a look at the end of September, early October, to see what the options are.
"The next negotiating round on September 27 is quite an important one because we really need to get an indication that progress is being made on two fronts [trade talks and the UK Internal Market Bill].
"And if not, then we will carefully consider our options.”
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7.59am update: Trade talks begin with Australia
Brexit talks with Australia started today, International Trade Secretary, Liz Truss has announced today.
She said: "The second round of UK-Australia trade talks starts today.
"We're intensifying talks and pushing UK interests hard in vital areas like tech, telecoms, financial services and food & drink.
"We want a gold standard agreement that delivers for the whole of Britain."
7.31am update: UK Internal Market Bill returns to Commons
The Prime Minister's new legislation returns to Parliament today for its latest Committee stage reading.
The controversial legislation is intended to maintain trade between the four nations and is scheduled to have its final report stage on September 29.
Controversy sparked earlier this month, after it was discovered the legislation violates elements of the withdrawal agreement.
Particularly the provisions surrounding state aid in Northern Ireland and customs declarations.