Digging trenches for air... www.alamy.com

Digging trenches for air... www.alamy.com

Digging trenches for air... www.alamy.com

Digging trenches for air... www.alamy.com

ARP workmen digging... www.gettyimages.com

Hidden Stories of The Royal... www.royalparks.org.uk

Were public bomb shelters... www.abc.net.au

BBC - Kennington's... news.bbc.co.uk

In 1938, Britain began... www.facebook.com

In 1938, Britain began... www.facebook.com

Hyde Park Corner (Royal... www.ww1cemeteries.com

Were public bomb shelters... www.abc.net.au

In 1938, Britain began... www.facebook.com

Digging In - London's Air... collection.sciencemuseumgro...

Anzac Memorial - In 1939... www.facebook.com

BBC - Kennington's... news.bbc.co.uk

Air raid shelters, london... www.alamy.com

Were public bomb shelters... www.abc.net.au

669 Ww2 Trenches Stock... www.gettyimages.in

Bombs dropped in Hyde Park... bombsight.org