The Premier League is the only domestic competition ever to have had four clubs represented in the last eight and, with Manchester City, Manchester United and Tottenham already through, Liverpool have repeated the English feat of 2007-08 and 2008-09 following their 3-1 second-leg victory at Bayern Munich on Wednesday night.
Here are two previous occasions when four English teams made the last eight:
2007-08: Arsenal, Chelsea, Liverpool and Manchester United
There had been previous instances of all three of a country's entrants reaching the last eight but the Premier League's long-established 'big four' - before the recent progress of City and Spurs - made history by seeing off AC Milan, Olympiakos, Inter Milan and Lyon respectively in 2008's last 16.
Liverpool beat Arsenal 5-3 on aggregate in their quarter-final before falling to Chelsea, who had seen off Fenerbahce.
United beat Roma and then Barcelona before winning on
