Wider view
Wider photo of the drain area.
Use this guide to understand the symptom first, avoid making the problem messier, and prepare useful details only at the end if you still need help.
The aim is not to diagnose the plumbing fault from the sofa. It is to describe the visible pattern clearly and safely.
✓Outside smell plus indoor slow drainage is important to mention.
✓Standing water around a gully should be described clearly.
✓Smell after rain or after appliance use can be a useful timing clue.
Good photos show the fixture and access, not just a dark close-up of water.
Wider photo of the drain area.
Close photo of standing water or blocked gully if safe.
Photo showing where water travels.
Now send your Wolverhampton area, room, fixture, symptom, urgency and safe photos. Keep the message short but specific.