Ah, I see what you're saying! I thought you meant the hoses on the ground, but you're talking about the hose with the water that returns back into the pond.
Well, jeez, there are tons of great ideas out there that are relatively inexpensive. I've picked out some UK sites for you, so that will make it easier.
Idea 1 is a spitter. You simply hook the hose to it and the water pops out the front of a myriad of designed little statuary. Could be a turtle, a frog, even a fish, etc. Here's a
site for you to get some ideas.
Another idea I've seen is a bamboo japanese deer scarer, which is befitting of a koi pond. Here's a
site for those. These are very easy to make if you can find the bamboo locally. You can find plans on the internet.
Really, can use anything with a hole or opening to return water back into a pond. You can buy them or make them.