A Dorset woman will stand trial charged with blackmail offences relating to animal research organisations.
Burton-upon-Trent magistrates in Staffordshire ordered Deborah Elizabeth Morrison, 34, to appear at Stafford Crown Court on 13 July.
She was charged with 11 offences of blackmail and attempted blackmail and four of interference with contractual links to animal research organisations.
The allegations relate to letters and emails sent to people and UK firms.
The individuals and companies are thought to possess past or current connections to the animal research industry.
One of the companies had links with Darley Oaks Farm in Newchurch, Staffordshire, which bred guinea pigs for research until January 2006.
Ms Morrison is from Dorchester.