NEW The European Research Group approves Boris Johnson's Brexit deal in three page legal summary:
"Our overall conclusion is that the Agreement preserves the UK’s sovereignty as a matter of law and fully respects the norms of international sovereign-to-sovereign treaties.

"The 'level playing field' clauses go further than in comparable trade agreements, but their impact on the practical exercise of sovereignty is likely to be limited if addressed by a robust government.

"In any event they do not prevent the UK from changing its laws as it sees fit at a risk of tariff countermeasures, and if those were unacceptable the Agreement could be terminated on 12 months’ notice."