Air raid siren marks 75 years since London's biggest Blitz raid

Thames water-tenders and fire-boats in Southwark Reach. Credit: Press Association Images.

Seventy five years ago today, much of the city of London burned to the ground as it was unexpectedly hit with incendiary bombs dropped by the Luftwaffe.

It was the biggest Blitz raid London experienced, killing 160 people and injuring more than 500 more.

The night became known as the Second Great Fire of London, as the Square Mile was in flames by 6:30pm.

Today, a commemoration service was held to remember how Londoners tried to fight the inferno.

City Temple spire from the interior showing the damage inflicted by Luftwaffe bombing raids on London. Credit: PA Archive/PA Images.

The City of London gave permission for an air raid siren to ring out at 6,30pm, to commemorate those who died, and those who worked to rescue those injured.

Hundreds of buildings were destroyed in the blaze across the Square Mile, but also further across the city - but miraculously St Paul's Cathedral remained standing.