888 Holdings continues to experience tremendous growth, with the Gibraltar-based company looking more and more as the biggest overall winner of the industry-changing events on Black Friday last year.

On Tuesday, 888 Holdings announced the most recent results for its 888poker operation, showing $161 million in revenue in 2011, up 58% over revenues produced in 2010.

According to the Financial Times, 888poker was especially successful in the last quarter of 2011, with revenue reaching $19 million, up 76% from $11 million in the fourth quarter of 2010.

All in all, 888 Holding's total operational revenue for 2011 shot up 26% to $331 million compared to $262 million in 2010.

After several years with struggling numbers, 888poker's fast growth has also been reflected in the operation's most recent expansions, and most notably in its new collaboration with the owners of the WSOP brand, Caesars Entertainment.

888 Holdings has already been operating Caesars Interactive Entertainment's WSOP poker branch in the UK with great success, and last month the joint venture was extended to include the U.S., too.

With the new venture, 888 Holdings will power Caesars' WSOP online poker branch in Nevada through the newly installed licensing system, as well as nationwide if new online poker regulation is pushed through.

The news about the WSOP partnership extension last month resulted in 888 Holdings' shares surging a full 11% on the London Stock Exchange.

Overall, the company's share prices have now doubled since September last year.