A green heritage plaque will be unveiled next month in memory of 35 people killed by a V2 rocket during World War II.

The rocket landed on the site of the Hazelhurst estate, on the border of Wimbledon and Tooting, at 8.30am on November 19, 1944, and a resident who lived a few streets away described hearing a “deafening whump” and seeing a blue flash.

Two brothers, aged 14 and eight at the time of the incident, found the roof of their home in Hazelhurst Road had been blown off and their grandmother was killed in the blast, along with 14 children.

In memory of the victims, a green heritage plaque will be unveiled opposite the entrance to Smallwood School at 4pm on Saturday, June 6.

Following the ceremony, afternoon tea and an exhibition takes place at St Mary’s Church, Wimbledon Road, and attendees can contribute a message to a tree of remembrance.

Organiser Geoff Simmons said: “This was one of the most devastating bombing incidents in Wandsworth in the Second World War but had been largely forgotten.

“Many people living locally knew nothing about it until a 70th anniversary remembrance event last year.

“We are very honoured to have a green plaque in our neighbourhood and pleased that Wandsworth Council have decided to acknowledge what happened in this way.”

A specially adapted Summerstown182 walk takes place at 2pm on the day of the ceremony, beginning at St Mary’s Church.

For more information, visit summerstown182.wordpress.com/november-19th-1944.