Huntingdon Life Sciences (HLS) was a contract research organisation (CRO) organized in Maryland and headquartered in East Millstone, New Jersey.

[2] In September 2015, Huntingdon Life Sciences, Harlan Laboratories, GFA, NDA Analytics and LSR associates merged into Envigo (now Inotiv).

HLS had two facilities in the UK (Huntingdon, Cambridgeshire and Eye, Suffolk), one in the USA (East Millstone, New Jersey) and an office in Japan (Tokyo).

It then offered four million American depositary receipts (ADRs) for sale at $15 each, representing the company's entire interest in Huntingdon.

Travers Morgan was allowed to lapse into insolvency, control passed into other hands, and Huntingdon wrote off the investment.

In 2002, HLS moved its financial centre to the United States and incorporated in Maryland as Life Sciences Research.

[4] In September 2015, Huntingdon Life Sciences, Harlan Laboratories, GFA, NDA Analytics and LSR associates merged into Envigo (now Inotiv).

In 1997, film secretly recorded inside HLS in the UK by BUAV and subsequently broadcast on Channel 4 television as "It's a Dog's Life", showed serious breaches of animal-protection laws, including a beagle puppy being held up by the scruff of the neck and repeatedly punched in the face, and animals being taunted.

"[15] In 1998, an undercover investigator for People for the Ethical Treatment of Animals (PETA) used a camera hidden in her glasses to make 50 hours of videotape of the HLS laboratories in Princeton, New Jersey.

[16] A 2001 article from The Resurgence Trust stated that HLS obtained a "gagging order" in the US that prevents PETA from publicising or talking about any of the information that they discovered.

[18] HLS managing director Brian Cass was sent a mousetrap primed with razor blades,[18] and in February 2001 was attacked by three men armed with pickaxe handles and CS gas.

[21] In 2008 seven of SHAC's senior members were described by prosecutors as "some of the key figures in the Animal Liberation Front" and found guilty of conspiracy to blackmail HLS.

[23] From 2006, The Daily Telegraph reports, the British Government took the decision to tackle "the problem of animal rights extremism.

[24] In total, 32 people linked to the group were arrested,[25] and seven leading members of SHAC, including Greg Avery, were found guilty of blackmail.

Der Spiegel writes that the number of attacks on HLS and their business declined drastically but "the movement is by no means dead.