The first pint has been bought at the Hope and Champion, a Wetherspoons pub located at the M40 services in Beaconsfield.
The controversial pub is Britain's first at a motorway service station, and will be open from 4am to 1am seven days a week.
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Police said the child, who was without a driving licence, was trying to make his way 2,500 miles from the east coast to Perth.
The 24-year-old was charged with 14 counts of wounding with intent to do grievous bodily harm and one count of throwing a corrosive fluid.
Winds will veer northerly overnight with colder air streaming in over the next few days.