essex police
The victim remains in a stable condition in hospital.
At least 750 people have been arrested since Monday, in what the Met called an "unprecedented" operation.
“It’s going to take time but we’re happy that this is being taken seriously,” Carol Gayle, the victim’s daughter, told HuffPost UK.
The family of Delsie Gayle said the pensioner has had counselling since the incident.
Essex Police are now investigating.
Forces across the country are recruiting more special constables to fight serious crimes.
No one was injured, Essex Police said.
Those who take part are often seen driving recklessly, on the wrong side of the road and on pavements.
Spanish authorities are now leading the investigation.