Heather Nicholson is a British animal rights activist.Nicholson is known for having co-founded three animal rights campaigns in the UK in the 1990s with her husband at the time, Greg Avery.
In 1997 the first campaign, Consort beagles, closed Consort Kennels, which bred beagles for animal-testing labs.
In 1999 Save the Hill Grove Cats closed Hill Grove Farm, which bred cats for laboratories, after a two-year campaign led by Nicholson and Avery.
That year Nicholson, Avery and Natasha Dellemagne set up Stop Huntingdon Animal Cruelty (SHAC) to close Huntingdon Life Sciences, a contract animal-testing company.
That campaign was unsuccessful and closed in 2014.In 2009 Nicholson was sentenced to 11 years imprisonment for conspiracy to blackmail in connection with the SHAC campaign.
Six other senior SHAC activists, including Avery and Dellemagne, were jailed for the same offences.
All were alleged by police to be key figures within the Animal Liberation Front.