Boris Johnson has pledged £10,000 towards finishing the memorial in London’s East End to Britain’s worst wartime civilian disaster.

East London Advertiser: Artist impression of how memorial will lookArtist impression of how memorial will look (Image: Stairway Trust)

The Mayor of London opened his City Hall chequebook live on air when he appeared for his monthly spot on LBC’s Nick Ferrari show today.

East London Advertiser: Boris Johnson raising cash at auction in May, 2013, for Bethnal Green disaster memorialBoris Johnson raising cash at auction in May, 2013, for Bethnal Green disaster memorial (Image: Stairway Trust)

He took a call from the Stairway to Heaven Memorial Trust’s secretary Sandra Scotting reminding him that he promised to look into her plea for cash the last time she rang in a month ago.

“I told Boris I paid £80 out of my own pocket for the annual memorial reception for the remaining survivors,” Sandra said afterwards.

“We need another £80,000 to complete the memorial—so I was thrilled when he pledged £10,000.”

Sandra now hopes to use the Mayor’s gift to persuade businesses in east London to cough up more cash to help get the half-completed memorial in Bethnal Green Gardens finished by the 72nd anniversary next March of the 1943 tragedy.

The concrete plinth is already in place just a few yards from the entrance to Bethnal Green Underground station which was being used as a public air-raid shelter during the Second Wortld War while still under construction.

All that remains to finish the memorial is its suspended oak staircase to be carved and erected.

Radar-controlled anti-aircraft guns were being tested unannounced in Victoria Park on the night of March 3, 1943, which caused a surge of people to head for the narrow staircase leading down to the underground shelter.

The surge led a sudden crush in which 173 men, women and children perished. The youngest to die was a five-month-old baby.

The Memorial Trust needs another £70,000 after Boris’s timely pledge today to complete the £480,000 project by next March.