Great Britain online gambling yield down in November as real event margins normalise Robert Fletcher, iGaming Business · January 20, 2021 at 10:00 pm The Great Britain Gambling Commission has reported 13% month-on-month fall in online gross gambling yield (GGY) for November, primarily due to real event betting margins normalising after their high levels during October. Total market GGY in November amounted to £471.5m (€532.6m/$644.4m), according to data collected from operators accounting for 80% of the British market. The Commission has published yield data for the market’s performance for each month of the novel coronavirus (Covid-19) pandemic. The regulator said the main reason for the decline in GGY was normalisation of margins in real event betting, with GGY down 28% from £290.0m in October to £209.2m. However, real event betting remains the largest vertical by GGY, with total bets and the number of active accounts both up by 4%.