"Transparency is crucial to ensuring that the public have confidence that elected Members of this House have not been unduly influenced by any donations or gifts that they may receive. For this reason, and the above concerns, I therefore request that you investigate whether the Prime Minister has followed all transparency requirements when registering this donation," Trickett said in a request to Kathryn Stone, the parliamentary commissioner for standards in the lower house.
Johnson has claimed his vacation was paid for by businessman David Ross. On Wednesday, however, the Daily Mail newspaper published a report in which Ross' spokesman said that no such transaction occurred.
Per the UK lower house's code of conduct, all members, as well as the prime minister, must register all their travels and hospitalities received outside of the United Kingdom if they are connected to their parliamentary and political activities.