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The London Eye wheel is lit in blue in support of the Clap for Heroes campaign following the spread of the COVID-19 pandemic, London, Britain, Jan. 7, 2021. (Photo/Agencies)
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The Trafalgar Square fountains in London, which have been lit up blue in a renewed gesture of thanks to the NHS and frontline workers, London, Britain, Jan. 7, 2021. (Photo/Agencies) (Photo/Agencies)
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The Trafalgar Square fountains in London, which have been lit up blue in a renewed gesture of thanks to the NHS and frontline workers, London, Britain, Jan. 7, 2021. (Photo/Agencies)
![](http://www.ecns.cn/hd/2021/01/08/9124dab1081444d6b4e86d2372d6f149.jpg)
Photo shows a NHS Ambulance with blue lights flashing in London, Britain, January 7, 2021. Iconic landmarks in London lit up blue in a renewed gesture of thanks to the NHS and frontline workers, London, Britain, Jan. 7, 2021. (Photo/Agencies)