But despite concerns from some Labour MPs, the party has recently adopted a more pragmatic approach towards Trump, who is odds-on to win this year’s US election.
Speaking earlier this year with Senator James Risch, a Trump ally, Mr Lammy said the Republican nominee had been “often misunderstood” in Europe and praised him for his call for Nato members to spend more on defence.
Last weekend, as Labour finalised its preparation for the election Mr Lammy held calls with senator Lindsay Graham, a Trump acolyte, and Robert O’Brien, his former national security adviser. Labour officials have been in contact with staff on the Trump campaign on a “daily basis,” The Telegraph understands.
If Sir Keir and Trump are both elected, there are likely to be significant policy differences between London and Washington next year.
Labour has backed British aid for Ukraine since its war with Russia began in February 2022, and Sir Keir has signalled there will be no change to government policy if his party wins power on Thursday.