Something's lurking in the bins

I am no chef.
But I like to help in my own way in the kitchen.
I am a trained KP (Kitchen Porter) having earned my stripes in The Scores Hotel and The Old Course Hotel.

So while visiting my mate Andrew's house and waiting for my tea, I offerred to nip out to the compost bin with the peelings.

Imagine my surprise when I opened the lid to find a family of these e-n-o-r-m-o-u-s slugs living in the bin.
It made me so sick I had to take a photo!