The Metropolitan Police has admitted it did not pass a letter detailing claims of alleged offending outside the UK by the Duchess of Sussex’s father Thomas Markle to other law enforcement agencies.

Authorities in the Philippines are currently investigating allegations that Meghan’s estranged father kept a hoard of child sex abuse images at his former home there – claims he denies and has called a “bunch of lies”.

On Friday, the duchess said a letter, sent to the Metropolitan Police and Royalty and Specialist Protection in 2018, containing “disturbing allegations” about her father, was shared with her and she was “given assurances that these were being investigated”.

But in an astonishing admission on Saturday, the force said it had failed to pass those claims on to other relevant agencies.

The Met said it received a letter in 2019 about a “number of claims” relating to Mr Markle and it was now “reviewing its handling” of the matter.

In a statement, Scotland Yard said: “Following a thorough review of Met…