The founder of Polly Peck International fled the UK to his home country of Cyprus in 1993 after his business empire collapsed.
He is due to appear in court in London on September 3rd to answer charges from the Serious Fraud Office over the alleged embezzlement of more than Â£30 million.
Mr Nadir return to the UK follows a decision by a judge in the UK to grant him bail in exchange for agreeing to the hearing.
Cyprus has no extradition treaty in place, meaning that the business man was under no obligation to return to face the allegations.
He said to Sky News: âMy biggest strength was knowing my definite innocence and innocent people shouldn't be afraid.
"We've a mission to fulfil. Somehow, having endured this injustice for 20 years, I feel it's time now to put closure to this in a most acceptable way."
The bail conditions stipulate that Mr Nadir must wear an electronic tag and that he does not leave London.
By Jim Ottewill