Chinese start-up Mobike has announced that it lost more than 200,000 bikes in 2019.

The company said in a blog that 205,600 "dockless" bikes were lost to theft and vandalism.

In 2018, it pulled out of Manchester after a series of incidents.

Shared dockless bikes, which are hired via an app, have become commonplace in cities worldwide over the last few years.

Companies like Uber, Lime and Ofo have all put shared bikes on city streets, as have some local councils.

In China, thousands of shared bikes have ended up in huge scrapheaps, leading to questions about whether there is demand for them.