Stalker Elliot Fogel was found guilty at Harrow Crown Court on Monday of breaching a lifetime restraining order preventing him from harassing a woman he met 24 years ago as a student.

Fogel, 40, of Edgware, north London, was also found guilty of saving and storing information about Claire Waxman, 38, a complementary therapist who has become known as a campaigner for victims’ rights.

The jury had heard how Fogel, a former television producer, pursued a "dishonest and devious" High Court claim against Ms Waxman as a means of continuing a campaign of harassment against her.

He became subject to a restraining order in 2005 after he was convicted of making nuisance phone calls to Ms Waxman.

He is banned from contacting her or her family directly or indirectly, as well as from researching and storing information about her, and is banned from certain parts of London.

Fogel had chosen not to give evidence at the three-day trial. Interviewed under caution last December, he denied the allegations, saying he had gathered and saved information from various sources on the internet to prepare a bona fide legal case.

He is due to be sentenced on Tuesday.