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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Plenty of sunshine as the longest day of the year draws to a close.
Clear skies and sunshine late into the longest day of the year. The temperature will drop rapidly though feeling cool in the morning.
St Keverne Bakery admitted a string of food hygiene offences after inspectors found rat droppings and rotting food last year.