Marriott Hotel general managers have joined forces with London's waterways charity Thames21 to clear litter from the River Thames.
The clean-up took place on the beach in front of County Hall which houses a London Marriott Hotel. April is Marriott International's Environmental Awareness Month and all 2,800 hotels across 70 countries are involved in projects.
"Marriott International has a long standing commitment to the environment, and this is another great way for us to expand our green efforts at the community level," said JW Marriott Jr, chairman and chief executive officer of Marriott International. "It is a perfect fit with our green volunteerism, recycling, energy and water conservation."
Thames21 River Programmes Manager Chris Coode said: "Thames21 run up to a hundred clean ups every year to reduce the impact of harmful litter on communities and wildlife. We all rely on each other for a decent quality of life and the commitment of businesses like the Marriott is vital to improving the long term health of this incredible river corridor and wildlife superhighway running through the heart of the capital."
The Marriott team spent two hours combing the beach between Westminster Bridge and Hungerford Bridge including the covered area beneath the London Eye.