Theresa May was watching from the sidelines as the House of Lords kicked off its debate on the Brexit bill, a silent reminder to the upper house that she expects them to avoid holding up the legislation.
It is unusual for the prime minister to sit in the House of Lords, but she is permitted to do so as a member of the Privy Council.
Asked earlier in the day about the debate, Mrs May told journalists: "When the Bill to allow the government to trigger Article 50 to start the Brexit process went through the House of Commons it went through with good majorities.
"It was not amended. I hope that the House of Lords will pay attention to that."
Around 190 peers are expected to speak on the European Union (Notification Of Withdrawal) Bill over two days of debate.