England completed a comprehensive win by an innings and 53 runs on the fifth day of the third Test against South Africa at St George's Park on Monday, taking an unbeatable 2-1 lead in the four-match series.

England were held up by a last wicket stand of 99 between Keshav Maharaj (71) and Dane Paterson (39 not out) and it needed a direct-hit run-out by Sam Curran from mid-on to clinch the result shortly before lunch. South Africa were bowled out for 237.

The partnership between Maharaj and Paterson was easily South Africa's best of the match and showed up an otherwise poor batting performance by the hosts.

South Africa added 135 runs in losing their last four wickets, which seemed unlikely when Vernon Philander chipped a catch to midwicket off Stuart Broad three balls into the day.

Mark Wood and Dom Bess also took wickets but England captain Joe Root could not add to his four wickets taken on Sunday, conceding 56 runs in 10 overs on Monday to finish with four for 87.

Maharaj hit Root for three fours and two sixes in an over which ended with four byes, costing 28 in total.

Despite the late face-saving flourish for the hosts, it was a result which was a triumph for England's youth policy, while the way South Africa were outplayed was a devastating blow for captain Faf du Plessis and new coach Mark Boucher.

Even before Monday's last rites there was speculation about Du Plessis' future. He has expressed his desire to lead South Africa in the T20 World Cup in Australia in October and November, by which time he will be 36. It seems possible that the fourth Test in Johannesburg from Friday could be his last home series in charge.

It was South Africa's seventh defeat in their last eight Tests, the only exception being their win in the first Test against England when it seemed that radical changes in the team management might have heralded a new dawn.

The win extended England's unbeaten run in Test series in South Africa, going back to 1999/2000 when Nasser Hussain's team were beaten by a side led by Hansie Cronje.

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SCOREBOARD
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England, first innings, 499-9 declared
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South Africa, first innings, 209
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South Africa, second innings (overnight 102-6)
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P. Malan lbw b Root                         12
D. Elgar b Wood                             15
Z. Hamza c Buttler b Wood                    2
F. du Plessis c Pope b Root                 36
H. van der Dussen c Pope b Root             10
Q. de Kock c Wood b Root                     3
V. Philander c Pope b Broad                 13
K. Maharaj run out (Curran)                 71
K. Rabada c Broad b Wood                    16
A. Nortje b Bess                             5
D. Paterson not out                         39
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Extras: (b12, lb1, nb1, w1)                 15
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Total: (88.5 overs)                        237
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Fall of wickets: 1-18 (Elgar), 2-22 (Hamza), 3-44 (Malan), 4-66 (Van der Dussen), 5-74 (De Kock), 6-83 (Du Plessis), 7-102 (Philander), 8-128 (Rabada), 9-138 (Nortje)

Bowling: Broad 10-5-14-1 (1nb), Curran 6-0-46-0, Wood 16.5-6-32-3 (1w), Bess 22-11-36-1, Stokes 5-2-9-0, Root 29-13-87-4

Result: England won by an innings and 53 runs

Series: England lead the four-match series 2-1

Man of the match: Ollie Pope (ENG)

Toss: England

Umpires: Bruce Oxenford, Rod Tucker (both AUS)

TV umpire: Joel Wilson (WIS)

Match referee: Andy Pycroft (ZIM)

Remaining match: January 24-28, Johannesburg.