We've just tried to use the shower in our upsatirs bathroom and there is very little pressure and, only hot water coming out. Every other tap is working in the house both hot and cold.
I was in the attic not long before this and I'm not sure if I could have knocked a pipe/conection. If I have knocked something, could this be the cause of the problem.
Do I need an electrician or a plumber? Any good advice would be great.