Pro-European MPs are set to meet the European Union's chief Brexit negotiator Michel Barnier in Brussels on Monday.
Leading Tory Brexit rebels Dominic Grieve and Anna Soubry will be among the delegation discussing withdrawal plans.
Former attorney general Mr Grieve, who headed a Conservative revolt which saw the Commons insist on a "meaningful" vote on the final EU withdrawal deal, described the visit as a "fact-finding mission".
He told the Press Association: "It will enable me to have a better understanding of the EU's position on Britain's withdrawal."
Mr Barnier is believed to be eager to hear the views of British MPs on Brexit as well as Government figures.
Mr Grieve also dismissed claims by Labour's shadow foreign secretary Emily Thornberry that the Government may try to overturn the amendment which forces a Commons Brexit vote when the EU (Withdrawal) Bill returns to Parliament this week.
He said: "There is no sign of the Government attempting to do that."
Mr Barnier has already had a meeting with pro-Leave campaigners.
Why are you making commenting on The Herald only available to subscribers?
It should have been a safe space for informed debate, somewhere for readers to discuss issues around the biggest stories of the day, but all too often the below the line comments on most websites have become bogged down by off-topic discussions and abuse.
heraldscotland.com is tackling this problem by allowing only subscribers to comment.
We are doing this to improve the experience for our loyal readers and we believe it will reduce the ability of trolls and troublemakers, who occasionally find their way onto our site, to abuse our journalists and readers. We also hope it will help the comments section fulfil its promise as a part of Scotland's conversation with itself.
We are lucky at The Herald. We are read by an informed, educated readership who can add their knowledge and insights to our stories.
That is invaluable.
We are making the subscriber-only change to support our valued readers, who tell us they don't want the site cluttered up with irrelevant comments, untruths and abuse.
In the past, the journalist’s job was to collect and distribute information to the audience. Technology means that readers can shape a discussion. We look forward to hearing from you on heraldscotland.com
Comments & Moderation
Readers’ comments: You are personally liable for the content of any comments you upload to this website, so please act responsibly. We do not pre-moderate or monitor readers’ comments appearing on our websites, but we do post-moderate in response to complaints we receive or otherwise when a potential problem comes to our attention. You can make a complaint by using the ‘report this post’ link . We may then apply our discretion under the user terms to amend or delete comments.
Post moderation is undertaken full-time 9am-6pm on weekdays, and on a part-time basis outwith those hours.
Read the rules here