- Bail out most of the water using a cup, or something similar, and throw the water away down another drain
- Hold a cloth or rag firmly over the overflow opening (towards the top of the sink) and place a plunger over the drain hole
- Pump the plunger up and down rapidly until the blockage has moved and the water drains away. If this doesn’t work, see the next bit of advice here to suggest what to do next
- You can buy plungers from most DIY shops (like Homebase or Wickes) and some local shops and supermarkets
- Before you finish, clean out the waste trap
- And we recommend you clean the area with a special drain cleaning product, which can be bought from most supermarkets or DIY stores