Resolved with the help of a drain rod. Main outlet to the sewer was clogged, lots of mushy paper and some large stones blocking the exit route. Thanks for all your help.
Thanks for the reply. There are two manhole covers on the driveway. Opened the first one and it is full of dark brown water with some floating paper and other "objects". I assume I need some drain rods to try to unblock. Is it normally quite easy to do?
Hi, Detached house about 4 years old. Shower in ensuite bathroom started to give problems draining last week, happens every 3rd or 4th time shower is used. Noticed that when flushing ensuite toilet you can now hear a whooshing gurgling sound from shower drain. Below the ensuite, on the ground...