I've just moved house (UK), and the space for the washing machine doesn't have a waste pipe. Instead, it has an odd looking connecting pipe that looks like something fits over it. How do I connect my washing machine, which has a normal waste pipe, to this? - I've tried Googling but can't find anything that looks like this image.
The previous occupants had a washing machine here, so we know it's possible! The only other thing in the washing machine gap is the cold water inlet.
This is the back of my washing machine - its waste pipe is on the right: