The 32-year-old fell off the wagon on Wednesday night after revealing plans to toast his achievement with a few vodka-tonics.
He later posted photos of himself on Twitter enjoying celebratory drinks with friends near St Paul’s Cathedral.
He wrote: “Well what a day, blind drunk at the minute and overwhelmed with all the messages. Thank you everyone it’s been emotional X.”
In one photo he is pictured holding up a drink and making the V for victory sign.
Wiggins’ success in the road cycling time-trial came just 10 days after his historic Tour de France win.
However, after winning gold, his cycling shorts were reportedly stolen while he showered.
Wiggins said: “It’s only a bit of cycling kit. But you don’t expect pilferers to do that in a five-star spa. Sweaty cycling kit is probably on eBay tonight.”