The investigation’s broader scope will mean that the probe will likely take over a year to complete.
The authorities are also reliant on the US Department of Justice releasing the full unredacted Epstein Files to them.
The legal route of prosecuting Andrew for the alleged misconduct offences has been scuppered by investigators needing to prove that the former prince committed the offence while undertaking his specific role as UK special trade envoy.
Instead, detectives are now considering using archaic anti-corruption laws to prosecute Andrew.
The Times reports that while the Bribery Act 2010 was considered as a legal route to prosecution, this idea was shelved because the act is not retrospective.
Police are now looking into whether the Prevention of Corruption Act of 1906 would apply to Andrew.
The century-old legislation makes it a crime for any employee to accept favours or bribes in exchange for preferential treatment.
The laws have not been disapplied to public officials.