The Guardian with the report, says the European Union will offer a delayed date, potentially to July 1, or further.
- EU's leaders are likely to suggest to May, who will need to agree to the offer when she meets in Brussels on Thursday, that there could be a three- or nine-month extension to the article 50 period if she manages to get her deal through parliament next week. The nine-month option would require the UK to hold European elections in May.
More at the link, here
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One implication of this is the Speaker's ruling out another 'meaningful vote' could well be reversed as this would be a significant change.