'UNDER MI6 MONITOR

M16 spied on Andrew Mountbatten-Windsor and his ex-wife Sarah Ferguson "because of shady people they were associating with", his biographer claims.

- BY REBECCA RUSSELL

Biographer of former prince says spies were interested in shady links | Author: Fergie should be quizzed & princesses should renounce titles

Andrew Lownie, author of Entitled, claims a source within the UK's foreign intelligence service revealed this to him.

Royal Family members cannot be the subject of MI6 files but their close associates can. Lownie said: "Andrew Mountbatten-Windsor and Sarah Ferguson were monitored because of their associates. M16 stumbled across them watching others."

When they were allegedly surveilled is not known. Lownie made the claim as he urged the Royal Family to speak publicly about links to paedophile Jeffrey Epstein involving the late Queen's middle son.

It comes as multiple UK police forces are now assessing whether to launch investigations linked to Epstein's activities.