Gyimah said the Brexit deal could lead to "potentially crippling ourselves politically and economically for decades to come
The UK government has been keen to agree a security partnership with the EU
According to one official, speaking on condition of anonymity, May's team have now dropped this tactic in the face of protests from politicians
Opponents of the deal on either side of the argument say it fails to deliver on what people voted for in the 2016 referendum
UK's parliament will hold a total of five days of debate on the deal, beginning on December 4
The biggest question now facing the EU is whether May's divided minority government can steer the deal
A half dozen nations including the U.S. and Japan blocked a U.K. application last month, with some saying the British offer was based on a set of outdated and incomplete commitments
Brexit's move forward comes after Spanish Prime Minister Pedro Sanchez received assurances from the UK government over Gibraltar, and dropped his threat to boycott the summit
EU had released the full text of the draft political declaration on November 22
But May declined to say whether the UK would be better off outside the EU, saying only it would be 'different'
Madrid is seeking a guaranteed veto on post-Brexit relations between the EU and Gibraltar
British companies in India now employ about 800,000 people
Instead, she said Britain could build a "better future" for itself outside the European Union
The declaration establishes the parameters of an ambitious, broad, deep and flexible partnership
Its text will be considered by an EU summit on Sunday alongside a draft divorce agreement struck last week
The 65,000 to 75,000 estimate was drawn up by consultants Oliver Wyman
The prime minister will travel to meet European Commission President Jean-Claude Juncker on Wednesday evening
According to EU rules, the withdrawal treaty is adopted by qualified majority and not unanimity
Britain invoked Article 50, its two-year notice of intention to withdraw from the EU, in March 2017
May's troubles are far from over as Northern Ireland's Democratic Unionist Party (DUP) went into revolt mode by abstaining during some votes in the House of Commons on Monday