Giant spider (Arachnids in the UK)

The spiders that crawled through Jack Robertson's hotel were genetically modified carcasses that, by the toxic waste, revived and grew into enormous sizes.

Hakim Khan collected some of the toxic waste as "evidence" for Yaz.

The spiders were led by a mother spider, who was larger than the others. Jack Robertson shot it, murdering it as it was already suffocating by it's own size. (TV:Arachnids in the UK)