*13 nations will be represented in the match-day squads of Biarritz Olympique and RC Toulon, who contest the Amlin Challenge Cup Final at the Twickenham Stoop tomorrow, and of Leinster Rugby and Ulster Rugby who clash in the first all-Irish Heineken Cup final.
*With a sell-out crowd of 82,000 expected for the Heineken Cup final, Saturday's game is on course to set a new attendance record for European club rugby's showpiece occasion. The previous highest attendance for a final was the 81,076 crowd for the 2007 game between London Wasps and Leicester Tigers at Twickenham Stadium.
*Heineken Cup pre-match entertainment will feature the European Champions Village in Twickenham's West Car Park which opens on Saturday from midday. With live music, bars and interactive games, the Champions Village will also offer fans the opportunity to have their photo taken with the Heineken Cup trophy and to mix with top players such as Paul O'Connell, Ben Youngs, George North and Richie Gray in the adidas zone.
*While only two clubs will be competing for glory at Twickenham on Saturday, all 24 Heineken Cup clubs will be represented on the pitch before the big kick-off in the shape of red London phone boxes proudly flying each club's flag, while the choreographed entertainment will also include traditional London cabs carrying the colours of Leinster and Ulster.
*For those fans not lucky enough to be in London and who will be watching the action on TV, for the first time, digital versions of the official match programmes of the Heineken Cup and the Amlin Challenge Cup finals will be available to purchase via www.ercrugby.com The programmes can be enjoyed on PCs, laptops, tablets and smartphones.
*Fans from across Europe will also be able to engage over the finals weekend on Twitter @ercrugby using the #LondonCalling and #AmlinCCFinal #HeinekenCupFinal #tags and through the two tournament Facebook pages www.facebook.com/HeinekenCup and www.facebook.com/AmlinChallengeCup