Having wrapped up his trip to the States, Prince Harry was in party mode upon returning back to London, England.

The red-headed royal ventured out for a little UK nightlife on Thursday (December 1) as he made his way over to The Brompton Club to join up with on/off girlfriend Chelsy Davy.

Partying the night away until 2:30 am, Harry and Chelsy had quite the entourage for their celebratory festivities, as fellow Brompton Clubgoers on this particular evening included Louis Walsh, David Haye, Princess Eugenie and Dizzee Rascal.

As for his visit to the U.S., Prince Harry underwent two months of intense military training in California and Arizona, with a rep for Naval Air Facility El Centro in El Centro, Calif. telling Us Weekly, "Captain Wales has completed his training in the United States and has returned to the UK."