England took a 1-0 lead in the first Test against South Africa with a comfortable 241-run win on the final morning in Durban.
South Africa resumed on 136-4 in search of a distant 416 but lost four wickets for seven runs in the first nine overs.
Moeen Ali removed danger man AB de Villiers with the third ball of the day and Steven Fin took 4-42 as the hosts were all out before lunch for 174.
The second of the four-match series begins in Cape Town on Saturday.
It was only England's second Test victory away from home since 2012 and their largest in terms of runs against South Africa since the Proteas were re-admitted to international cricket in 1991.
In contrast it was a fourth defeat in the last five Tests for South Africa, whose position at the top of the Test rankings is under increasing threat from India.
The South Africans have gone seven matches without a Test victory, which equals their longest run without a win since their re-admission.
In the 138-year history of Test cricket, only three teams have avoided defeat from being four wickets down on the final day. And it soon became apparent South Africa would not alter that statistic when their star batsman De Villiers missed a turning off-break from Moeen that was given out lbw and upheld on review.