Method 1
Use a plunger which can be purchased from any plumbers merchant or hardware store
Method 2
Pour a small amount of bleach into the plughole and leave overnight
Method 3
Purchase some drain sticks and put these down the plug hole, leave overnight
DRAIN STICKS CLICK HERE
Method 4
WARNING!!!
MAKE SURE YOU HAVE NOT PUT BLEACH IN IF YOU USE THIS OPTION OTHERWISE YOU WILL BURN YOURSELF
WARNING!!!
Place a bucket under the sink direcly under the U-Bend and unscrew it with caution.
Empty and wash the U-Bend to remove the blockage
If the blockage is in your toilet – CLICK HERE