David Davis says the rights of EU nationals in the UK will be protected by a new treaty and UK courts.
Boris Johnson says the UK is ready to engage with the world "in a way we haven't been able to do for 43 years".
The UK is "reliant" on EU nationals to enforce welfare and hygiene standards in abattoirs, peers say.
The UK minister says chlorine-washed poultry is an issue for "the very end stage of one sector" of trade talks.
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