Tributes are under way to mark the largest military seaborne operation ever attempted.
The blaze in Chadwell St Mary has been a "significant and challenging incident", fire service says.
Anthony Canty was knocked off his bicycle and an 18-year-old has since been arrested, police say.
The British actor, who also appeared in Merlin and Little Britain, died of complications from pneumonia.
An 18-year-old appears in court charged with wounding with intent and possessing a knife.
Organisers said the decision was made with "great regret" to protect visitors and stakeholders.
