Northern Ireland has seen a 26% increase Rat activity in UK properties has significantly increased over the last year, thought to be due to a record hot summer and exacerbated by recent wet weather. (Image: Peter Jordan/PA Wire)Experts have revealed that rat activity has significantly increased over the last year and it’s thought to be due to a record hot summer and exacerbated by recent wet weather.Rentokil Pest Control said it had recorded a 10% year-on-year increase in confirmed rodent activity, with large regional spikes in Northern Ireland and northern England.Northern Ireland recorded the largest increase of 26%, followed by…