Invasion of the mutant super-rats: How pests are 'becoming less susceptible to rodenticide and more wary of control methods' as Britain is plagued by vermin - while huge piles of rubbish overflow on the streets amid bin strike

Pest control experts have told MailOnline that sightings have been on the rise, particularly in urban areas where the animals have access to strewn food from takeaways and piles of rubbish bins.