More from AB de Villiers: "I haven't seen a team bowl like that for a long time. We were outplayed in the second innings - credit to them.

"There's a lot still to play for personally. It's my first Test as captain - I have a lot of motivation. I don't know about changes. We need a few good meetings about where we're going. I don't think there's a lot of issues with the squad."

South Africa captain AB de Villiers: "It was a good toss to win and the right decision to bat first. All the batters got in, but there were soft dismissals. It cost us dearly I thought it was a 400 wicket. We allowed them into the game.

"It's a disappointing Test for us. Maybe I missed a trick or two; maybe the intensity wasn't good enough. There was a sniff at 90-4 and there were areas where we could have done better."

Geoffrey Boycott
Ex-England batsman on BBC Test Match Special

Image source, Getty Images

"It's been a wonderful Test, a great advert for Test match cricket, competitive all the way. When the pressure moment came, it was England in the name of Stuart Broad.

"He showed ability, technique and character, above all. He bowled out of his skin; the crux was he broke the back of the South African innings with five wickets. He came out and did the business - he was fantastic."

Tom Sparkes: This morning Rooty would have been told, be there at the end. Great day of cricket.

So, in the short term, South Africa have surrendered their number one Test ranking: India now occupy top spot in the ICC Test ratings. But in the medium term, England have surely shown in this series that they have a fantastic chance of taking over that place at the top of the table.

Image source, Getty Images

England won by seven wickets

England take unassailable 2-0 lead in series

South Africa 313: Elgar 46; Stokes 3-53

England 323: Root 110, Stokes 58; Rabada 7-78, Morkel 3-76

South Africa 83: Broad 6-17

England 74-3: Cook 43; Elgar 2-13

Full scorecard

When we started this morning, who would have thought England would have this match - and the series - wrapped up by tonight. That they have done so is testament to they extra-ordinary match-turning capabilities of Stuart Broad, who produced a phenomenal 6-17 to wrest control of this match in the third innings.

Michael Vaughan
Ex-England captain on BBC Test Match Special

"This was a terrific cricket wicket, and brought to life by overhead conditions today and high-class bowling. It was real class from Broad and catching from the highest drawer."

Image source, Getty Images

What a magnificent effort by England. They've beaten the world's best side in their own back yard, and they've done it with a game to spare. They have fully deserved to win this series, and just as they were in the Ashes, Stuart Broad and Joe Root have been the key players.

Jonathan Agnew
BBC Test Match Special

"This is a triumph. To beat South Africa in South Africa with a game to spare is really quite something."

Image source, Getty Images

It's there! England have done it. Joe Root clips a four through the leg-side and sets the seal on a famous series victory.

Have you ever seen a team win a hugely important series in confident manner? There are even glum faces on the balcony. Root and Taylor prolong the agony. If they don't get on with this we'll be off for bad light soon.

Jonathan Agnew
BBC Test Match Special

"It's been a funny old 20 minutes."

Michael Vaughan
Ex-England captain on BBC Test Match Special

"A tentative push, it was wide and he got himself into a tangle - you're better off having an old yahoo! There was width on offer."

Joe Root is doing what Nick Compton probably wishes he'd done - he's making sure he's there at the end, to boost his already princely average. Hence he's quite content to play out a maiden from Elgar.

Gordon MacGregor: Seems a bit far fetched, calling this a Test....