Possible caterpillars?

Possible caterpillars?

Observation - Possible caterpillars? - UK and Ireland. Description: The bush is full of white stuff in clumps and also green furry things hanging. There was something

The bush is full of white stuff in clumps and also green furry things hanging. There was something similar in the area last Summer and we were told they're poisonous caterpillars. Another area of the car park has been cordoned off because of caterpillars but not this area, and a lot of people walk past this.