Harry Kane’s brace cancelled out Ferjani Sassi’s penalty, leaving Gareth Southgate’s side level on points with Belgium in Group G.
Kane heads 91st-minute winner after Sassi penalty cancels out opener.
The England captain, who had volleyed his side into the lead in the 11th minute, headed home after John Stones had flicked on a Kieran Tripper corner in the 91st minute to secure a vital three points in their bid to qualify from Group G.
England made their early dominance count when Kane found the net in the 11th minute.
Tunisia were handed a huge lifeline in form of a penalty in the 34th minute, thanks silly foul by Kyle Walker.
This 2-1 victory means it is the first time in World Cup history England have scored an added time winner.
England’s next game sees them face Panama in Nizhny Novgorod on Sunday, while Tunisia are up against Belgium in Moscow on Saturday.
England squad World Cup 2018 – English team in World Cup 2018!