I'll change that estimate re 20k Tartan Army fans converging on London. Current observations of droves and droves of Scotland supporters arriving in their 1000s have dramatically changed that estimate to well over 30k Scotland fans pouring in to London. Scotland's team hotel grounds and public streets in London already teeming with 1000s of Scottish well-wishers and if any Scotland player had any doubts re the importance of this match, they will be dispelled beyond doubt by the time the team coach is traditionally escorted and cheered on to Wembley by 1000s of Tartan Army fans plus the requisite Scottish pipers!! There is one thing the English support will never match up to and that is the colourful and stunning display of the Scottish fans in full flow!! 
The difference is "night and day" but I'm biased of course lol. THIS MATCH IS NOT JUST ABOUT WINNING 3 PTS AND MOST FELLOW TARTAN ARMY FANS KNOW EXACTLY WHAT I'M SAYING!! GOOD LUCK SCOTLAND - MAY THE GODS PLUS THE EURO REFEREE (NO WEMBLEY "HOMER" PLS!!) BE WITH US!!!
The difference is "night and day" but I'm biased of course lol. THIS MATCH IS NOT JUST ABOUT WINNING 3 PTS AND MOST FELLOW TARTAN ARMY FANS KNOW EXACTLY WHAT I'M SAYING!! GOOD LUCK SCOTLAND - MAY THE GODS PLUS THE EURO REFEREE (NO WEMBLEY "HOMER" PLS!!) BE WITH US!!!