Boris Johnson has committed to publishing “everything that we can” from the full Sue Gray inquiry into allegations of lockdown-breaking parties in Downing Street.

Facing a growing threat to his leadership, the Prime Minister went further on Tuesday to promise a fuller publication of the senior civil servant’s investigation once the Metropolitan Police probe has concluded.

There has been confusion over the extent of any subsequent report after Mr Johnson refused to accept the demands of Tory MPs and Labour leader Sir Keir Starmer during a Commons statement.

Asked at a press conference in Kyiv, Ukraine, whether he would commit to publishing the full inquiry, including the 300-plus images handed to investigators, the Prime Minister said: “Yes, of course we’ll publish everything that we can as soon as the process has been completed, as I said yesterday.”