Hot on the heels of sector peer 888 Holdings, online gaming giant PartyGaming releases interim results on Friday.Broker KBC Peel Hunt is tipping net gaming revenues will decline by around one-fifth to $200m from $254m in the first half of last year, predominantly due to the strength of the dollar against the euro and sterling.Competition from US sites such as Full Tilt and Poker Stars is making things tougher for the company in its European heartland and it has not been able to strike back on the US front since it withdrew from that market in 2006 as a result of falling foul of the Unlawful Internet Gambling Enforcement Act.The Restaurant Group, operator of the Frankie and Benny's and Garfunkel's chains, has been hit by the economic downturn but has opted not to indulge in the 'two-for-one' deal frenzy indulged in by some of its competitors. With many of its sites located on leisure parks, footfall has been helped by the solid trend in cinema attendance. Counterbalancing this, the outlets in airports are sure to have suffered from the tail off in passenger numbers.Sales at the interim stage are expected to be in the region of £212m, with like-for-like sales likely to be down by around 3%, as they were back in May.With unemployment levels rising sharply it has been a tough year for recruiters such as Robert Walters. 'The first half should show a significant deterioration in Recruitment markets, with both volumes and rates declining month-on-month for possibly the whole period,' reckons broker Panmure Gordon. It may be some consolation to the company's shareholders that the interim dividend should be safe as the cash position should not have deteriorated too much.INTERIMSBritish Polythene, Charles Taylor, Chesnara, Clarkson, Davis Service Group, Headlam Group, Heritage Oil, JKX Oil & Gas, Johnston Press, Kenmore European Industrial Fund, Lavendon Group, Melrose, PartyGaming, Restaurant Group, Robert WaltersINTERIM DIVIDEND PAYMENT DATEAberdeen Asian Income Fund Ltd., Anglogold Ashanti, Beazley Group, Bluehone AIM VCT 2, Brunner Inv Trust, Domino's Pizza UK & IRL, Edinburgh UK Tracker Trust, Independent Inv Trust, Invista Real Estate Investment Management Holdings, Microgen, Reed ElsevierQUARTERLY PAYMENT DATEBankers Inv Trust, City of London Inv Trust, ING UK Real Estate Income Trust Ltd.QUARTERLY EX-DIVIDEND DATECryptologic LdAGMSDQ EntertainmentUK ECONOMIC ANNOUNCEMENTSInternet Retail Sales (09:30)Gross Domestic Product (09:30)Private Consumption (09:30)Exports (09:30)Imports (09:30)INTERNATIONAL ECONOMIC ANNOUNCEMENTSPersonal Income (13:30) (US)Personal Spending (13:30) (US)Core PCE (13:30) (US)University of Michigan Consumer Confidence (15:00) (US)Business Climate Indicator (10:00) (EC)Consumer Confidence Indicator (10:00) (EC)Economic Confidence Indicator (10:00) (EC)Industrial Confidence Indicator (10:00) (EC)Service Sector Confidence (10:00) (EC)FINAL DIVIDEND PAYMENT DATEAberdeen New Dawn Inv Trust, AXA Property Trust, City Natural Resources High Yield Trust, European Assets Trust, Henderson Far East Income Ltd., Kewill, Latham (James), New City High Yield Fund Ltd., New FCPT Ld, New FCPT Ltd., Northern Foods, SABMiller