Prince William goes clubbing in Mayfair without wife Kate Middleton
Wills, who turns 30 on 21 June, enjoys spending quiet nights at home in Angelesy with Kate Middleton, but he likes to have fun with old friends.
After attending the wedding of cousin Lady Emily McCorquodale to James Hutt earlier in the day with Kate and Prince Harry, William headed to a private member's club in Mayfair with Guy and his Royal protection officials.
British actress Naomi Watts - who will play Wills' late mum Princess Diana in a new film - and husband Liev Schreiber were also at the venue.
The Prince is currently facing a dilemma - whether to commit to his Royal duties now or extend his time in the RAF by three years.
Wills, who has just qualified as a search and rescue captain in the Royal Air Force, is set to see out his duties as a pilot until 2013.
Within the next few months he has to make a tough decision about his future beyond that.
A source tells us: 'It all depends on whether Kate falls pregnant by then or not.
'William's main goal is to be a father but at the same time he loves the thought of staying in the forces.'
Read the full story about Kate Middleton and Prince William in Now magazine dated 11 June 2012 - out now!