We get several cockroach species in the UK and they all carry filth and diseases and cause allergies. The German, American, Oriental and Brown-banded cockroaches are typically found in warm, damp and dark areas in drains, basements, kitchens and bathrooms. Infestations are usually much bigger than observed due to the nocturnal nature of the roach and nest that are rarely discovered.
Call out your pest controller to kill these pests and use hi-tech equipment to deal with any hidden in the cracks and crevices where normal treatments cannot reach.