How much will President Trump's visit cost the UK?
President Donald Trump is in the UK for an unprecedented second state visit to the UK.
Traditionally, US presidents serving a second term - such as Trump - are not offered an additional state visit.
Instead, they are invited for tea or lunch with the monarch, as happened with former presidents Barack Obama and George W Bush.
However, in February Prime Minister Sir Keir Starmer handed Trump an invitation from King Charles III during a White House meeting to discuss a UK-US trade deal.
BBC Verify's Tom Edgington has been looking into how much this visit could cost the UK.