The Mean Girls star had been due to travel to the U.K. to testify against Daniel Voderwulbecke, 37, who is accused of bombarding her with texts and social media messages.

His trial kicked off on 28 May (15), the day which marked Lohan's deadline to complete a community service order in the U.S., and it is believed she was unable to fly to Britain due to a hold-up in the legal process which ended with a judge approving her hours and ending her probation related to a 2012 driving case.

During a hearing at Westminster Magistrates' Court in London on Thursday (28May15), prosecutor Martyn Bowyer told the court, "We became aware about 10 days ago that she was required to return to the U.S. to complete a community service order. But we were informed... that she was due to complete that order... and should be at liberty to leave the USA... It was very much hoped she would have got a flight to the U.K... to give evidence... The prosecution is satisfied she has chosen not to do so."

Two stalking charges against Voderwulbecke have now been dropped following Lohan's decision not to pursue the matter, along with an assault charge, believed to stem from a clash with a security guard outside a London theatre where the star was appearing in a production of Speed-the-Plow last year (14).

Voderwulbecke still faces two charges of criminal damage and one of harassing a worker at a London restaurant. He denies the charges.