Westcliff-on-Sea
（重定向自Westcliff）
![](/Images/godic/202502/20/Essex_UK_location_map.svg3701.png")
![View south-east over the Thames Estuary to the Isle of Grain, Kent from the shore at Westcliff-On-Sea](/Images/godic/202502/20/Thames_Estuary_at_Westcliff3701.jpg")
Westcliff-on-Sea is a suburb of Southend-on-Sea, a seaside resort and unitary authority in Essex in south-east England. It is situated on the north bank of the Thames Estuary, about 34 miles (55 km) east of London.