Ms Brown said the funeral, on 13 January, would be a time to “celebrate” William’s life.

“We want to remember what a wonderful, beautiful boy he was,” she said.

Paying tribute to him, she added: “We had seven wonderful years.

“It’s been a privilege and an honour to have William as my son.

“He is going to be greatly missed, but the memories will shine through forever.”

A 49-year-old man arrested after the crash has been bailed until March pending further inquiries, according to Kent Police.