Wider view
Photo of the ceiling mark from a safe distance.
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.
✓Timing matters: after shower use, after bath draining or after toilet flushing.
✓A spreading stain is more urgent than an old dry mark.
✓The room directly above should be mentioned if known.
Good photos show the fixture and access, not just a dark close-up of water.
Photo of the ceiling mark from a safe distance.
Photo of the bathroom fixture above if known.
Photo showing whether water is actively dripping.
Now send your Wolverhampton area, room, fixture, symptom, urgency and safe photos. Keep the message short but specific.