Despite being up at six thirty, Mandy Parker was late leaving her flat in Catford, South London, to take her four-year-old son Timmy to nursery school. Although concerned with the time, she ensured Timmy was secure in his seat in the back of her white Range Rover Evoque. Once in the driver’s seat, she double-checked she had her purse and credit cards for her weekly supermarket shop.

As she pressed the start button and moved forward, there was an enormous explosion and the four wheels of the two thousand-plus kilo vehicle left the ground. Pieces of bodywork flew in all directions, landing on other parked cars. The Range Rover was engulfed in a ball of fire.

It took the mortuary attendants several days to assemble enough body parts to allow the pathologist to conduct a post-mortem examination on the remains of Mandy and Timmy Parker.

At the same time, the vehicle was being re-assembled and examined by fire and explosive experts in the underground carpark of the Metropolitan Police Laboratory in Lambeth, South London.

The final report would conclude the explosion resulted from an unsophisticated, yet efficient explosive device, attached by a magnet to the engine compartment of the Range Rover Evoque.