Wider view
Photo of the bath water level or 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.
✓Slow bath drainage can be local to the bath waste or connected with a wider bathroom drain issue.
✓Smell from the bath waste is useful to mention.
✓Water below or around the bath changes the issue from drainage only to possible leak too.
Good photos show the fixture and access, not just a dark close-up of water.
Photo of the bath water level or drain area.
Wider bathroom photo showing access to bath panel.
Photo of any floor water around the bath.
Now send your Wolverhampton area, room, fixture, symptom, urgency and safe photos. Keep the message short but specific.