Helo, i had a washing machine installed and the pipe from it runs down the outside of the back wall into a drain. Only about 1ft of the pipe is visible, but i think it looks messy. The bloke assures me this is the normal way to do it and i looked at my neighbours either side and the pipe is visible on their walls to. Is there no other way around this?

they don't make invisable pipes yet.

is the w/m sited near a sink ? If so it should be possible to put in a waste trap that incorporates a spigot for connecting a w/m waste onto so the sink and w/m share a waste pipe.