From London Tonight reporter Paul Brand:
For the past couple of hours police officers have been chatting to travellers at the site where the woman was killed last week.
We have been advised not to go onto the site but police confirmed that the woman's body was found in a field at the back of the camp.
A couple who run a riding school next door have been keen to make clear it was not one of their horses that was involved in the incident.
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At least five people have suffered minor injuries but the cause of the blast is still unknown.