15 April 1970 - Celtic 2 Leeds United 1 European Cup semi final 2nd leg - (agg: Celtic 3-1 Leeds) Hampden Park -Glasgow . .
. The highest ever attendance for a UEFA competition match was in the 1969–70 European Cup semi-final at Hampden Park, Scotland's national stadium. A record 136,505 people attended the match with only 4,500 fans travelling up from Yorkshire, the support for Celtic was overwhelming .
Flashback Battle of Britain. Celtic lap of honour after victory over Leeds UtdL/r Scorers Bobby Murdoch (4) & John Hughes (9) with captain Billy McNeill (5)
PIC ERIC MCCOWAT PHOTO ARCHIVE