Teardrop-shaped and tree-covered, Isleworth Ait sits in the River Thames. This long ait faces Old Isleworth. It also faces the towpath near the Royal Mid-Surrey Golf Club. Isleworth Ait is a nature reserve. It is managed by the London Wildlife Trust.
Isleworth Ait is not open to the public. Access is only allowed on organized event or volunteering days. The island is a sanctuary for wildlife despite regular flooding. More than 57 bird species call Isleworth Ait home. These include the tree-creeper, kingfisher, and heron.
Two rare snail species live here. They are the two-lipped door snail and the German hairy snail. Several rare beetle species can also be found. This unusual wildlife makes Isleworth Ait a remarkable reserve. It is a local nature reserve. It is part of The River Thames conservation area.
Once, Isleworth Ait was a center for osier production. Osier is a type of willow. It was harvested to weave baskets. These baskets carried Middlesex fruits and vegetables to London markets. Isleworth Ait was once five smaller islands. River erosion and boat traffic changed the island over time.
The River Crane flows into the Thames near Isleworth Ait. It flows southwest of the island. The Duke of Northumberland’s River flows to the northwest. Thames Water owns Isleworth Ait today. It houses the outfall from Mogden Sewage Treatment Works. This treats wastewater from over two million residents.
The Metropolitan Water Board bought Isleworth Ait in the 1930s. They bought it from the Duke of Northumberland. Volunteers from the London Wildlife Trust help care for the island. They ensure this unique habitat thrives. Imagine the island bustling with activity. Workers harvested osier. Baskets were woven. The river teemed with boats carrying goods.
Consider the impact of the Second World War. Bombing changed the river’s depth. After the war, housing shortages led people to live on boats. This created a floating community. Even today, Isleworth Ait faces environmental challenges. Untreated outfall affected the river. Efforts continue to improve water quality. Upgrades to the Mogden works aim to clean London’s watercourse.
Isleworth Ait shows nature’s resilience. It is a haven for wildlife amid urban development. The island provides a glimpse into the past. Osier production shaped its economy. Ownership transferred from dukes to water boards. Volunteers work to protect its future.
Next time you pass Isleworth Ait think about the island’s story. It is a story of nature, industry, and community. It is a story written on the water.