If you have a blocked sink in Westrip, Gloucestershire there are several steps that you can try to unblock it. The first step is to use a plunger - make sure the plunger is tightly sealed on all sides of the plug hole and then pump vigorously up and down for about 10 seconds before releasing pressure slowly. If this does not work then remove any excess water from the plug hole with an old bottle or cup so that no more will come out when attempting another method. Boiling water poured directly into the plughole can often clear blockages as well, however be careful not to scald yourself! For tougher blockages, using vinegar combined with baking soda which causes fizzing reactions inside drains may help; allow fifteen minutes before flushing thoroughly with hot running tapwater afterwards. Drainage Gloucestershire pipe (the curved part underneath your kitchen sink) could also contain debris set aside some times do inspect & clean by unscrewing connecting nuts around each end but take great care if using metal tools such as screwdrivers etc. Finally, 5-10 m hand operated drain rods might require extra effort in pushing them through pipes until they either hit roots causing backups outside or break away compacted solid residue within especially nearer bends. Good Luck !