Campers joined police to search through the night for the missing boy, who was last seen at a campsite at Thistledown Farm in Nympsfield, near Stroud at around 7pm last night.
Police said a more extensive hunt was due to start as daylight breaks.
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The man behind multi-million pound 'The Black Farmer' sausage and meat brand has spoken to ITV News about his year long battle with cancer.
Chillier this evening with largely clear skies.
Mainly dry with sunny spells this afternoon.