A workshop says it has worked on five contaminated cars in the last fortnight.
Millions of bedbugs were crawling out of mattresses in what a pest controller said was the worst outbreak he had seen in 38 years.
An infested house in Cardiff was so bad the mattresses and bed frames had to be incinerated.
Southeastern said the insects were discovered in drivers' cabs, with the trains removed for cleaning.
There are 437 outstanding cases in Coventry with residents waiting about 12 weeks for a response.
Gareth Davies said it was the worst cockroach infestation he'd seen in someones home.
One pest control association said it had heard of "increased cockroach activity in some urban areas".
A Gloucestershire family say they have been left in an "unbelievable" situation.
Hi-tech measures are being deployed in the long-running fight with Dumfries and Galloway's feathered pests.
