The foreign secretary is due to meet US vice-president JD Vance amid ongoing conflicts in Gaza and Ukraine.
David Lammy is expected to host Vance on Friday at Chevening, his official country retreat in Kent, as the vice-president begins a summer holiday with his family in the UK.
They will discuss UK-US relations in a bilateral meeting before being joined by their families.
The pair are said to have developed a warm friendship, bonding over their difficult childhoods and Christian faith.
Lammy is reported to have attended Mass at the vice-president’s Washington residence during a visit in March, and now plans to repay the favour with the stay at Chevening.
Built in the 17th century, Grade I-listed Chevening was previously the home of the earls of Stanhope, before it was gifted to the